
Interval workouts receive a lot of praise in the fitness industry, and for good reason. Not only do intervals allow you to work at a higher intensity level than sustained workouts, but they also help you burn more calories.1
Today’s workout is all about supramaximal interval training, also known as SMIT. By definition, this type of interval training means you’ll be working out harder than what you can maintain. Unlike traditional HIIT (high intensity interval training) workouts where you use your aerobic energy system, you’ll be using your anaerobic energy system instead. Because the intensity is so much harder, you will most definitely get a true rest.
In order to get the most out of this workout, aim for 100 percent effort during the hard, 30-second intervals. By the end of each interval, you should be feeling the burn and very short of breath. During the 90-second rest period, you’ll want to recover to the point that you can say a full sentence in one breath before beginning the next sprint.
Let’s get to work!
Today’s focus: Intervals
Warmup: Bodyweight and Cycling
30 seconds each:
shoulder swings
shoulder circles
counterclockwise
shoulder circles clockwise
3 minutes easy pedaling
WORKOUT: On equipment (Complete 12 times through)
30 seconds extremely hard cycling
90 seconds easy recovery pedaling
Cooldown: Bodyweight and Cycling
3 minutes easy pedaling
30 seconds each:
quad stretch
hamstring stretch
calf stretch
glute stretch
Great job! Hopefully you’re feeling pretty worn out after that. Don’t forget to check out the other workouts in this series!
Good luck and stay fit!
Becca Capell
iFit Head Trainer
Have an iFit Premium membership? Join this workout to follow along with the workout featured in this post!
1. Withers, R. T., Laforgia, J., Shipp, N. J., & Gore, C. J. (1997). Comparison Of Elevations In Energy Expenditure Following Submaximal Continuous Running And Supramaximal Interval Running. Medicine & Science in Sports & Exercise,82(2). doi:10.1249/00005768-199505001-00402
WARNING: This post is not intended to replace the advice of a medical professional. The above information should not be used to diagnose, treat, or prevent any disease or medical condition. Please consult your doctor before making any changes to your diet, sleep methods, daily activity, or fitness routine. iFit assumes no responsibility for any personal injury or damage sustained by any recommendations, opinions, or advice given in this article.
We’ve reached the final stretch in iFIT’s Finish Strong journey, a three-month commitment to staying active, motivated, and focused through the end of the year. You’ve built your consistency, and now it’s time for the grand finale: the Dash to the Finish Challenge.This month is all about pushing to the finish line while celebrating how far you’ve come. Embrace the season, whether you’re walking through the holiday markets in Germany or feeling the Jingle Bell Burn in the iFIT Studio.It’s time to finish strong!Complete the workouts from your selected Challenge level by December 31, 2025 and you’ll earn this digital reward for your Trophy Case. Here are this month’s Challenges:Treadmill and elliptical workoutsWalking and Running: Finish strong this month with walks and runs! You’ll explore the famous holiday markets in Germany with Casey Gilbert, complete holiday-themed walks and runs in the iFIT Studio with Ashley Paulson, John Peel, Richard Biglia, Jesse Corbin, Pearl Fu, and Jonnie Gale, walk across a glacier in Argentina with John Peel, and wrap things up in Nepal with Ang Tshering Lama.Join the Dash to the Finish Challenge: Walk & RunCycling WorkoutsCycling: Cycle to the finish line this month! iFIT Trainer John Wessling will lead you through an interval ride and an endurance ride alongside a dog sled team in Alaska. Then, you’ll head to Colorado with iFIT Trainer Keith Gabel to explore the Devil’s Thumb Resort. Finally, iFIT Trainer Ashley McIvor will join you in Norway for a HIIT ride and strength ride that is sure to get you in the holiday spirit.Join the Dash to the Finish Challenge: CyclingRower WorkoutsRowing: iFIT Trainers Alex Gregory and Susan Francia will take you on an epic adventure this month! Join Alex in Wales for endurance and speed rowing workouts, then head to Canada for quick but effective training with Susan, focused on HIIT, power, and endurance.Join the Dash to the Finish Challenge: RowingStrength workoutsStrength: Build strength in the iFIT Studio and in Iceland this month! Catch the incredible dynamic duos of Hannah Eden and Paulo Barreto, John Peel and Ashley Paulson, and Hannah and Ashley, and a solo workout with Shannon Cooper for fun, holiday-themed workouts. iFIT Trainer Jonnie Gale will round things out with two strength-focused workouts in the stunning backdrop of Iceland.Join the Dash to the Finish Challenge: StrengthDisclaimer: The primary purpose of this blog post is to inform and entertain. Nothing on the post constitutes or is intended to be a substitute for professional medical advice, prevention, diagnosis, or treatment. Reliance on any information provided on the blog is solely at your own risk. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition, and please consult your doctor or other health care provider before making any changes to your diet, sleep methods, daily activity, or fitness routine. Do not disregard professional medical advice or delay seeking it because of information available on this blog. iFIT assumes no responsibility for any personal injury or damage sustained by any recommendations, opinions, or advice given in this article. Always follow the safety precautions included in the owner’s manual of your fitness equipment.
December 1, 2025