20 Best Under The Desk Stepper [2024]

Are you looking for the best under the desk stepper? Based on expert reviews, we ranked them. We've listed our top-ranked picks, including the top-selling under the desk stepper.

We Recommended:

# Preview Product
1 Sunny Health & Fitness Mini Stepper with Resistance Bands, Black Sunny Health & Fitness Mini Stepper with Resistance Bands, Black
2 Stamina InMotion Compact Strider - Smart Workout App, No Subscription Required - Under Desk Seated... Stamina InMotion Compact Strider - Smart Workout App, No Subscription Required - Under Desk...
3 PERLECARE Under Desk Elliptical Portable Elliptical Machine, Desk Bike Pedal Exerciser with... PERLECARE Under Desk Elliptical Portable Elliptical Machine, Desk Bike Pedal Exerciser with...
4 Cubii JR2+, Under Desk Elliptical, Pedal Exerciser, with Bluetooth Fitness Tracker App Sync,... Cubii JR2+, Under Desk Elliptical, Pedal Exerciser, with Bluetooth Fitness Tracker App Sync,...
5 Sportsroyals Stair Stepper for Exercises-Twist Stepper with Resistance Bands and 330lbs Weight... Sportsroyals Stair Stepper for Exercises-Twist Stepper with Resistance Bands and 330lbs Weight...
6 Cubii Pro Under Desk Elliptical Machine for Home Workout, Pedal Bike Cycle Motion, Bluetooth Sync... Cubii Pro Under Desk Elliptical Machine for Home Workout, Pedal Bike Cycle Motion, Bluetooth Sync...
7 MBB Mini Stepper,Under Desk Pedal Exerciser,Folding Colorful Foot Peddle,Physical Therapy Leg... MBB Mini Stepper,Under Desk Pedal Exerciser,Folding Colorful Foot Peddle,Physical Therapy Leg...
8 SPECSTAR Under Desk Elliptical Electric Machine, Mini Seated Elliptical Bike, Portable Trainer Pedal... SPECSTAR Under Desk Elliptical Electric Machine, Mini Seated Elliptical Bike, Portable Trainer...
9 Under Desk Elliptical Machine with Smart App, Mini Seated Elliptical Desk Exercise Equipment with... Under Desk Elliptical Machine with Smart App, Mini Seated Elliptical Desk Exercise Equipment with...
10 GGBEST Exercise Pedal Machine Bike Pedal Exerciser Fitness Folding Pedal Exerciser Under Desk Foot... GGBEST Exercise Pedal Machine Bike Pedal Exerciser Fitness Folding Pedal Exerciser Under Desk...
11 TABEKE Pedal Exerciser, Under Desk Bike Stationary Pedal Exerciser for Arm and Leg Workout, Portable... TABEKE Pedal Exerciser, Under Desk Bike Stationary Pedal Exerciser for Arm and Leg Workout,...
12 DeskCycle Ellipse Under Desk Elliptical Machine, Compact Mini Seated Elliptical Desk Exercise... DeskCycle Ellipse Under Desk Elliptical Machine, Compact Mini Seated Elliptical Desk Exercise...
13 Sunny Health & Fitness Fully Assembled Magnetic Under Desk Elliptical Peddler – SF-E3872 Sunny Health & Fitness Fully Assembled Magnetic Under Desk Elliptical Peddler – SF-E3872
14 LifePro Under Desk Elliptical - Under Desk Bike Pedal Exerciser - Perfect Desk Exercise Equipment -... LifePro Under Desk Elliptical - Under Desk Bike Pedal Exerciser - Perfect Desk Exercise Equipment...
15 ANCHEER Seated Elliptical Machines for Home Use, Office, Under Desk Cycle, Indoor Mini Pedal... ANCHEER Seated Elliptical Machines for Home Use, Office, Under Desk Cycle, Indoor Mini Pedal...
16 Leasbar Under Desk Elliptical Exercise Machine Mini Exercise Bike Cycle for Home Office Workout... Leasbar Under Desk Elliptical Exercise Machine Mini Exercise Bike Cycle for Home Office Workout...
17 JOROTO Under Desk Bike Pedal Exerciser Standing & Sitting Mini Desk Elliptical for Home Office, Desk... JOROTO Under Desk Bike Pedal Exerciser Standing & Sitting Mini Desk Elliptical for Home Office,...
18 Cubii JR1, Under Desk Elliptical, Under Desk Bike Pedal Exerciser, Seated Elliptical, Work from Home... Cubii JR1, Under Desk Elliptical, Under Desk Bike Pedal Exerciser, Seated Elliptical, Work from...
19 SITFIT, Sit Down and Cycle! Powered Foot Pedal Exerciser for Seniors, Under Desk Elliptical Exercise... SITFIT, Sit Down and Cycle! Powered Foot Pedal Exerciser for Seniors, Under Desk Elliptical...
20 LegStimulator Seated Under Desk Elliptical Electric Machine w Remote Control Portable Trainer Pedal... LegStimulator Seated Under Desk Elliptical Electric Machine w Remote Control Portable Trainer...
SaleBestseller No. 1
Sunny Health & Fitness Mini Stepper with Resistance Bands, Black
  • TRACK YOUR FITNESS: LCD monitor measures the steps time total and calories, making your exercise more reasonable and effective
  • TOTAL BODY: Equipped with removable training bands this high-quality stepper tightens over 20 different core muscles and using low-impact aerobic...
  • HYDRAULIC DRIVE SYSTEM: Built with a hydraulic drive system this workout machine provides a smooth stepping motion. Arrives assembled (simply attach...
  • HEIGHT ADJUSTMENT: Height adjustment knob adjusts the step motion height for either short bursts or long steps
  • WIDE NON-SLIP PEDALS: Large textured foot plates ensure a solid, non-slip footing Height range will decrease with each counter-clockwise turn
SaleBestseller No. 2
Stamina InMotion Compact Strider - Smart Workout App, No Subscription Required - Under Desk Seated...
  • PORTABLE, QUIET AND EFFICIENT CARDIO: The Stamina InMotion Compact Strider is small and lightweight, making it easy to use in any home or office...
  • ADJUSTABLE TENSION WITH MONITOR: Vary the intensity of your workout by turning the adjustable dial while you stride; See your stats while exercising...
  • MULTIPLE MOVEMENT OPTIONS: The InMotion Strider can be used sitting or standing. Pedal forward or reverse to target different muscles. Easily...
  • SMART FITNESS APP INCLUDED W/ PURCHASE: This product is fully supported by müüv, the all-in-one workout app that offers personalized training, a...
  • GREAT FOR GAMERS: Get an effective workout while gaming – passive, low-attention exercise promotes leg movement and improved circulation in a...
SaleBestseller No. 3
PERLECARE Under Desk Elliptical Portable Elliptical Machine, Desk Bike Pedal Exerciser with...
  • DUAL MODE ELLIPTICAL: Combine the benefits of an mini elliptical and a stair stepper with this under desk exercise machine. Features adjustable...
  • LCD MONITOR: The digital monitor can track calories, RPM, stride, time, and distance during exercise. Accomplish exercise goals by tracking your...
  • ANTI-SLIP PEDALS: The pedal exerciser, support rod, and the bottom of this under desk elliptical machine are designed with anti-slip material to...
  • PORTABLE AND EASY TO STORE: The mini elliptical is lightweight and compact in size. Easily store the unit under a desk or in a closet. The integrated...
  • WHISPER QUIET OPERATION: Our under desk elliptical machine is designed to operate quietly without excessive noise. The pedal exerciser may need to be...
Bestseller No. 4
Cubii JR2+, Under Desk Elliptical, Pedal Exerciser, with Bluetooth Fitness Tracker App Sync,...
  • NEWEST UPDATED COMPACT SEATED ELLIPTICAL - Our newest model includes 8 resistance levels to help you burn calories, targeting the lower body and...
  • EASILY TRACK YOUR FITNESS GAINS WITH BLUETOOTH SYNC TO THE CUBii APP - Cubii JR2+ is our newest seated elliptical that connects to the Cubii mobile...
  • PORTABLE ELLIPTICAL – Includes a built-in handle and weighs less than 20 lb. making this model easier to carry from room to room and is the perfect...
  • BUILT-IN LCD DISPLAY - The built-in display screen tracks your strides, distance, speed, active time, and calories burned, while seamlessly syncing...
  • MADE FOR ANY SEAT – Place in front of any seat or chair and enjoy the added benefit of our Attachable Wheel Cup helps hold the front wheel of any...
SaleBestseller No. 5
Sportsroyals Stair Stepper for Exercises-Twist Stepper with Resistance Bands and 330lbs Weight...
  • 【Twist Stepper with Resistance Bands】Twist action helps you tone thighs and buttocks, while achieving a challenging cardiovascular workout....
  • 【Hydraulic Drive System】European standard hydraulic cylinder strengthen on the stair stepping fitness machine let you enjoy your stair stepping...
  • 【Oversized Pedals】Our mini stair steppers use oversized pedals with silicone anti-skid pad as well as the skid-resistant floor protectors to keep...
  • 【LED Monitor】The LED monitor on the mini stepper can clearly record exercise time, count, calories burned total count,and distance in mile. The...
  • 【Fully assembled】This portable stair stepper is fully assembled and space-saving. It only takes 0.23 SquareMeters of space. No worry, we provide...
SaleBestseller No. 6
Cubii Pro Under Desk Elliptical Machine for Home Workout, Pedal Bike Cycle Motion, Bluetooth Sync...
  • CUBII PRO UNDER DESK ELLIPTICAL- Get fit while you sit! Cubii PRO is an elliptical machine that's like an under desk bike, under desk treadmill, or...
  • WORK FROM HOME FITNESS - Now you can exercise while you work from home - right at your desk! Burn calories, lose weight, and feel great with Cubii...
  • LOW IMPACT, ULTRA SMOOTH ELLIPTICAL EXERCISE MACHINE - Move a little more each day to reach your wellness goals! Use this under-desk elliptical, burn...
  • LCD DISPLAY AND WIRELESS BLUETOOTH APP SYNC FITNESS TRACKER - The digital monitor clearly displays your progress so that you can use your desk...
  • COMPARE WITH OTHER WORKOUT EQUIPMENT FOR HOME WORKOUTS - Under desk bike pedal exerciser, under desk treadmill, stair stepper, steppers for exercise,...
Bestseller No. 7
MBB Mini Stepper,Under Desk Pedal Exerciser,Folding Colorful Foot Peddle,Physical Therapy Leg...
  • [Notice!]:This step machine is not used standing, standing is strictly prohibited!This is an office typing at the same time exercise...
  • [Colorful Mini Foot Pedal Exerciser]:Low intensity long time flexible movement!Exquisite gift box version! Colorful! Foldable storage into the...
  • [Function]:It's the only one in the world A treadmill used for long periods of exercise while sitting down.
  • [A Lifesaver For Varicose Veins In The Legs]:Ninety-nine and a half percent of office workers have varicose veins in their legs that over time can...
  • [Very Simple To Use]:The mini treadmills are designed for medical research and are designed to prevent the harmful effects of lack of exercise and...
Bestseller No. 8
SPECSTAR Under Desk Elliptical Electric Machine, Mini Seated Elliptical Bike, Portable Trainer Pedal...
  • CONVENIENT FOR EXERCISE - This SPECSTAR portable elliptical machine is convenient for you to exercise; You can strengthen your legs, burn calories,...
  • AUTO & MANUAL MODE - This seated elliptical machine does not need to be assembled and supports 2 modes for users; In auto mode, 3 training programs...
  • 10 ADJUSTABLE SPEED LEVELS - The manual mode offers 10-speed levels of back and forward movement for users to adjust; You can customize the most...
  • LCD FOR DATA - It’s super easy to track your motion data from the LCD screen which will show the time, speed, calories, and distance; You can switch...
  • MEET MULTIPLE NEEDS - Whether you want exercise in office, seeking a machine for rehabilitation training after an illness, or troubled with cold after...
Bestseller No. 9
Under Desk Elliptical Machine with Smart App, Mini Seated Elliptical Desk Exercise Equipment with...
  • SEATED UNDER DESK ELLIPTICAL - Compact mini elliptical that includes 7 resistance levels letting you burn calories, improve mobility, and increase...
  • LCD DISPLAY - The digital monitor allows you to keep up with your progress by tracking calories burned, strides pedaled, distance traveled, and more!
  • UDESK APP & PANEL CONTROL - The udesk mobile app syncs with iPhone and Android cellphones by Bluetooth, to track your distance pedaled, calories...
  • PORTABLE ELLIPTICAL - Workout while you work or rehab while you rest! The under desk elliptical is perfect for use at your desk, the couch, or even at...
  • LEG EXERCISER - Make this elliptical the perfect fitness gift for a parent or grandparent.This compact elliptical machine is approachable for all ages...
SaleBestseller No. 11
TABEKE Pedal Exerciser, Under Desk Bike Stationary Pedal Exerciser for Arm and Leg Workout, Portable...
  • 💪【CONVENIENT & PORTABLE】 The peddler exerciser is fully assembled, which saves your time and effort. Product size: 14.2×12.6×4.7in(folded),...
  • 💪【SAFE & STABLE】Sponge covers can effectively insulate heat without hurting your body. Four non-slip rubber pads and specially designed PVC...
  • 💪【LCD MONITOR】 Bike pedal exerciser is equipped with an large LCD display, it tracks time, count, RPM, and calories burned. The easy-to-read...
  • 💪【ADJUSTABLE RESISTANCE】Easy to adjust resistance with tension knob to customize exercise intensity. Turn the knob left or right to decrease...
  • 💪【CHOOSE TABEKE】Top product quality, fast delivery by Amazon, and 100% satisfied customer service. If you have any questions, please feel free...
Bestseller No. 12
DeskCycle Ellipse Under Desk Elliptical Machine, Compact Mini Seated Elliptical Desk Exercise...
  • MULTI-TASK: Our premium quality under desk elliptical machine can help you burn calories, boost your energy level, increase productivity and reduce...
  • MAGNETIC RESISTANCE: This compact elliptical exercise machine has ultra-smooth magnetic resistance, a superior flywheel and a sturdy base. It's...
  • EASY TO USE: Large 6-Function LCD display tracks revolutions, RPM, time, calories burned and more; For easy reading, remove the display from under the...
  • BUILD UP STRENGTH: Choose from 8 different resistance levels, from very easy to really hard! This seated elliptical machine is the perfect leg...
  • SWITCH IT UP: Extra long and wide pedals allow you to adjust the shape of your elliptical motion by where you place your feet; Place them on top of...
SaleBestseller No. 13
Sunny Health & Fitness Fully Assembled Magnetic Under Desk Elliptical Peddler – SF-E3872
  • DIGITAL MONITOR: Track time, speed, calories, and distance using the centrally located digital monitor. Or chose the scan function to scroll through...
  • BELT DRIVE MAGNETIC RESISTANCE: This elliptical pair a belt drive mechanism with magnetic resistance to give you a low maintenance and smooth quiet...
  • 8 LEVELS OF RESISTANCE: Choose between 8 levels of magnetic resistance using the tension knob to provide increased levels of intensity to your workout...
  • COMPACT SIZE: This low profile elliptical will fit under most desks and around your favorite chairs giving you the freedom to exercise while you sit...
  • EASY TRANSPORTATION – A centrally located transportation handles allows you to move your elliptical with ease.
SaleBestseller No. 14
LifePro Under Desk Elliptical - Under Desk Bike Pedal Exerciser - Perfect Desk Exercise Equipment -...
  • BOOST YOUR FITNESS - our professionally designed under desk bike can help you burn calories, decrease stress, tone your legs and improve your mood -...
  • BONUS FEATURES - we added many free add ons to our elliptical - enjoy the yoga mat and resistance band for your workouts. Use the castor stoppers to...
  • CUSTOMIZE THE CHALLENGE - whether your a beginner or a pro, you can choose the level of difficulty you want - simply turn the tension knob to choose...
  • TRACK YOUR WORKOUTS - we made it super easy to track your workouts - use the LCD monitor to track time, strides, calories burned and more - or use the...
  • LIFETIME WARRANTY - every Lifepro product undergoes rigorous quality control testing, comes with lifetime support from our 'guiding angels' and has a...
SaleBestseller No. 15
ANCHEER Seated Elliptical Machines for Home Use, Office, Under Desk Cycle, Indoor Mini Pedal...
  • 【Electric & Manual 2 IN 1】This desk exercise compact elliptical has two using modes: plugging in the power to use or used it directly without...
  • 【AUTO & Manual Exercise Mode】You can freely choose automatic and manual mode exercise, Auto (P1-P3) and Manual (5-levels speed, from 1.5KM/h to...
  • 【Digital Display Monitor】Track your exercise progress using the digital monitor. Keeping track of your time, speed, calories, scan, and distance....
  • 【Quiet & Portable Seated Elliptical】This elliptical pair a belt drive mechanism with magnetic resistance to give you a low maintenance and smooth...
  • 【Mini and Compact, Easy to Use】You don't need to assemble, you can use it directly. The compact and portable design makes it easy to move this...
SaleBestseller No. 16
Leasbar Under Desk Elliptical Exercise Machine Mini Exercise Bike Cycle for Home Office Workout...
  • [Low to no impact on your knees] Compared to the traditional exercise bike or stepper which simply go around or up and down, the elliptical motion...
  • [Visualized Workout] With the help of the built-in digital monitor you could track real time calories burnt, strides and distance. Super easy to...
  • [Ultra Quiet] The belt drive promises a smooth gliding motion for long time use. Thanks to the whisper quiet design you can multitask with the under...
  • [Compact, Portable yet Sturdy] Compact size designed for under desk use. The transportation handle and the wireless design allow you to move your mini...
  • [Quick Assembly] The mini elliptical pedal exerciser is separated into 4 parts coming with a screw bag. The installation only takes a few minutes....
Bestseller No. 17
JOROTO Under Desk Bike Pedal Exerciser Standing & Sitting Mini Desk Elliptical for Home Office, Desk...
  • [ SAFER UNIQUE DESIGN ] : As the ONLY 4-wheels 4-tracks elliptical on the market, it provide you with a smoother, quieter under desk exercise that is...
  • [ HIGHLY VERSATILE ] : The user can sit or stand to use this stepper elliptical, its compact design allows you to fit it under any desk with ease. The...
  • [ TRACK YOUR WORKOUTS ] : With electronic fitness monitor displays number of strides, total number of strides, exercise time, and calories burned; or...
  • [ SUITABLE CROWD ] : it’s difficult to find time to do exercise in busy working time and life, this desk elliptical will help the gamers, office...
  • [ MORE DETAILS ] : With a very practical top handle that allows you to move it anywhere easily. With fine steel bearing and sturdy steel construction,...
Bestseller No. 18
Cubii JR1, Under Desk Elliptical, Under Desk Bike Pedal Exerciser, Seated Elliptical, Work from Home...
  • UNDER DESK ELLIPTICAL- Get fit while you sit! Cubii JR1 pedal exerciser is the leading compact and ergonomic mini elliptical that lets you workout or...
  • WORK FROM HOME FITNESS - Now you can exercise while you work from home - right at your desk! Burn calories, lose weight, and feel great with Cubii...
  • LOW IMPACT, ULTRA SMOOTH ELIPTICAL EXERCISE MACHINE - Move a little more each day to reach your wellness goals! Use this under-desk elliptical, burn...
  • BUILT-IN LCD DISPLAY FITNESS TRACKER - The digital monitor allows you to keep up with your progress by tracking calories burned, strides pedaled,...
  • LEG EXERCISER - Make this Cubii elliptical the perfect fitness gift for a parent or grandparent. This compact elliptical machine is approachable for...
Bestseller No. 19
SITFIT, Sit Down and Cycle! Powered Foot Pedal Exerciser for Seniors, Under Desk Elliptical Exercise...
  • ⚡Power Up Your Progress: All bodies are different, so we made this seated pedal e
  • 💪Workout At Your Level: It doesn't matter if you're using SITFIT for an under desk bike pedal exerciser, or an exercise bike for seniors with...
  • ✅A Mini Exercise Bike For Those With Mobility Goals: This is not a desk cycle with hard resistance levels. For sedentary people like us that's not...
  • 💯Easy To Use: With the control panel or remote (and guide included) set your stationary pedal exerciser to manual or auto then choose your speed or...
  • 🏠Try It In Your Home: SITFIT Seat and Desk Pedal Exerciser is 16lbs and has a handle making it easy to slide away when not in use and comes with a...
SaleBestseller No. 20
LegStimulator Seated Under Desk Elliptical Electric Machine w Remote Control Portable Trainer Pedal...
  • AUTO & MANUAL MODE | 10 SPEED LEVELS: Our under desk elliptical machine offers 2 different modes depending on your needs. There's auto mode (P1-3)...
  • FORWARD & BACKWARD MOTION | NON-SLIP PEDALS: The backward and forward motion of this elliptical machine will allow you to work towards specific muscle...
  • BUILT-IN LCD DISPLAY: Measure and record your fitness statistics. Track time, speed, calories, and distance using the centrally located digital...
  • CONVENIENT REMOTE CONTROL: No more bending or looking down while working or watching TV anymore. Just use the remote control of our home or work...
  • PORTABLE & WHISPER QUIET: You can enjoy your workout in the convenience of your home or office without disturbing those around you. Our mini bike...

Having trouble finding a great under the desk stepper?

This problem is well understood by us because we have gone through the entire under the desk stepper research process ourselves, which is why we have put together a comprehensive list of the best under the desk steppers available in the market today.

After hours of searching and using all the models on the market, we have found the best under the desk stepper for 2023. See our ranking below!

How Do You Buy The Best Under The Desk Stepper?

Do you get stressed out thinking about shopping for a great under the desk stepper? Do doubts keep creeping into your mind?

We understand, because we’ve already gone through the whole process of researching under the desk stepper, which is why we have assembled a comprehensive list of the greatest under the desk stepper available in the current market. We’ve also come up with a list of questions that you probably have yourself.

John Harvards has done the best we can with our thoughts and recommendations, but it’s still crucial that you do thorough research on your own for under the desk stepper that you consider buying. Your questions might include the following:

  • Is it worth buying an under the desk stepper?
  • What benefits are there with buying an under the desk stepper?
  • What factors deserve consideration when shopping for an effective under the desk stepper?
  • Why is it crucial to invest in any under the desk stepper, much less the best one?
  • Which under the desk stepper are good in the current market?
  • Where can you find information like this about under the desk stepper?

We’re convinced that you likely have far more questions than just these regarding under the desk stepper, and the only real way to satisfy your need for knowledge is to get information from as many reputable online sources as you possibly can.

Potential sources can include buying guides for under the desk stepper, rating websites, word-of-mouth testimonials, online forums, and product reviews. Thorough and mindful research is crucial to making sure you get your hands on the best-possible under the desk stepper. Make sure that you are only using trustworthy and credible websites and sources.

John Harvards provides an under the desk stepper buying guide, and the information is totally objective and authentic. We employ both AI and big data in proofreading the collected information.

How did we create this buying guide? We did it using a custom-created selection of algorithms that lets us manifest a top-10 list of the best available under the desk stepper currently available on the market.

This technology we use to assemble our list depends on a variety of factors, including but not limited to the following:

  1. Brand Value: Every brand of under the desk stepper has a value all its own. Most brands offer some sort of unique selling proposition that’s supposed to bring something different to the table than their competitors.
  2. Features: What bells and whistles matter for an under the desk stepper?
  3. Specifications: How powerful they are can be measured.
  4. Product Value: This simply is how much bang for the buck you get from your under the desk stepper.
  5. Customer Ratings: Number ratings grade under the desk stepper objectively.
  6. Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their under the desk stepper.
  7. Product Quality: You don’t always get what you pay for with an under the desk stepper, sometimes less, and sometimes more.
  8. Product Reliability: How sturdy and durable an under the desk stepper is should be an indication of how long it will work out for you.

John Harvards always remembers that maintaining under the desk stepper information to stay current is a top priority, which is why we are constantly updating our websites. Learn more about us using online sources.

If you think that anything we present here regarding under the desk stepper is irrelevant, incorrect, misleading, or erroneous, then please let us know promptly!

Related Post:

FAQ:

Q: Are stepper drivers required?

A: The 28BYJ-48 is a 5-wire unipolar stepper motor that runs on 5 volts and doesn’t require any driver. But the NEMA17 Stepper Motor is requires 8V-35V Power as the torque is too high. Therefore we need Stepper Driver Module like A4988 or DRV8825. The following are the components required for learning this tutorial.

Q: Are stepper machines good for knees?

A: Stair steppers simulate walking up stairs to really give you an aerobic workout that helps to strengthen the muscles around your knee joints, improving your overall knee health. A good aerobic workout also helps keep you in shape and helps you lose weight, both of which help lessen the stress on your knee joints.

Q: What is an exercise stepper?

A: – Base Stays In Place – Adjustable Height – Sturdy