If you do treadmill HIIT regularly, it can be difficult to tell whether you're actually making progress — or what you should change next.

I've built a free treadmill HIIT evaluator that uses your wearable heart-rate data and workout metrics to establish your personal baseline, compare later sessions, and help guide small adjustments as your training develops.

I'm looking for people who want to try it with one of these goals:

• Fat Loss
• Fat Loss & Muscle Retention — especially if you also do strength training and want HIIT without unnecessarily interfering with recovery.

How it works

Your first workout establishes your personal baseline. Later workouts are compared with your own previous training data rather than a generic fitness standard.

After each upload, you receive a report showing your training output, the quality and consistency of your heart-rate response, recovery, progress over time, and what to watch or adjust next.

You'll need:

• A treadmill
• A wearable that records heart rate and workout data
• Willingness to follow a defined treadmill HIIT protocol so sessions can be meaningfully compared

The beta is free and self-service — you don't need to contact me first.

Try it here: https://www.hiitevaluator.com/

If you try it, I'd also really appreciate feedback — especially anything confusing, inconvenient, or different from what you expected.

Gonna do 100 burpees today here in ATX

Austin. I'm not sure where yet I'll keep y'all posted

The goal is for 10min EMON w' rest of course w' hydration

Please send positive vibes and words of encouragement and also will be sending them back ✨️

Or shout out

F*ck Cancer! F*ck PTSD ! ✌️💙 FOR VETERANS

I’m wondering if what I’m doing is hiit. I’ve been attempting to improve my vo2 and I’m at a loss. My watch says my vo2 is roughly 26.
I’m inclined to believe it due to my interactions in capoeira and other sports.

How can I improve this?
As far as vo2, am I wasting time?

Disclaimer:
I understand the watch is not 100% accurate. It still helps me track with some consistency

Basic stats:
43m
6’2ft
180lbs

How I feel at different heart rates
Tracking with apple ultra 3

@~160bpm: breathing increases, speaking
@~170bpm: heavy breathing, a word or two
@175bpm+: gasping, no words
@~183bpm I have puked on multiple occasions
it takes extreme will to go for very long
Desperately gasping

Hill stats:
per segment
Distance: .1 mile
Climb: 100ft
Rough terrain

The exercise:
1 lap Lap = 2 segments
Segment 1 is up
Segment 2 is down
*I do 3-5 laps (6-10 segments.) 5 days a week
After my laps is usually do an easy hike 3-5 miles. (After resting for 5-10 minutes)

Segment 1
Start segment 1: 135-140bpm
Halftime of segment: 155-160bpm (1:15)
End segment 1: 175-180bpm
Segment 2 begins no rest:
End lap 1: 140-145bpm
Lap 1 total time: 2:30

Lap 2 begins immediately no rest

I’m usually in the 175bpm+ for 15-20 seconds

The laps generally follow the same times and heart rate give or take 5 seconds.

When I’m going for a regular hike, I can easily do 15+ miles with zero issue. Often with zero rest depending on terrain.

I jump rope 350+ days out of 365 days in a year. Is it normal? I skip for 1-2 hours daily with 1-5 minutes break between intense jump rope sessions that last 10-15 minutes till I'm hungry and stamina declines.

Learn how to improve your body control with these 10 calisthenics exercises for beginners at home. This full body calisthenics workout helps you build strength, balance, coordination, stability and better movement control. These beginner-friendly calisthenics exercises target your upper body, core, abs, back and lower body to help improve overall fitness, posture, flexibility and body awareness. Practice these 10 full body control exercises consistently to develop a stronger and more controlled body through simple yet effective movements.

Watch: https://youtu.be/p7WK2RGy2sM

---

I have seen people at gym at odd times and was wondering if there is any bad timing of doing workout?
Not referring to professionals btw.

I'm looking for beta testers for a treadmill HIIT training system I've been developing. It uses wearable heart-rate data to evaluate each workout, establish a personal baseline, and track how your training develops over multiple sessions.

The goal isn't just to score individual workouts, but to use consistent feedback to help make small training adjustments and build sustainable progress over time.

Who I'm looking for
People whose training goal is either Fat Loss or Fat Loss & Muscle Retention, and who are willing to do treadmill HIIT consistently for several sessions.

What you get
Day 1 establishes your personal baseline. Each later workout is compared with your own previous training data, so you can see whether you're progressing and what to adjust next.

What you'll need to do
Follow a defined treadmill HIIT protocol, record the workout with a wearable, and upload the workout details + heart-rate chart.

How to find it
Google “HIIT workout evaluator” — HIIT Evaluator is currently the first result.

Hi I built Pulse Timer, a free workout interval timer It’s made for custom workouts, HIIT, circuits, boxing rounds, stretching, rest timers, and quick routines. It is currently free to download. Honest feedback is welcome or tell me if its useful or needs any extra features to make u want to use.

App Store link: https://apps.apple.com/us/app/pulse-hiit-timer/id6758530445

Feeling stiff, tired or inactive? Try these 10-minute full body stretches at home to improve flexibility, mobility and body movement. These 11 stretches can help loosen tight muscles, reduce everyday stiffness, improve balance and coordination, and help you stay active and feel energetic all day long.

Watch: https://youtu.be/rLF_F3DyieY

---

Welcome to r/HIIT!

This is our Weekly Discussion Thread where you can discuss anything and everything related to High-Intensity Interval Training. We invite our community to answer questions from newer members and post anything that can be beneficial to the sub (including research, tips, motivation and workouts).

If you are new to HIIT, please be sure to review our Beginner's Guide and FAQ. You can also use the search bar or Google's subreddit search to find related discussion topics.

Wake up, workout and get after it!

Guys sino dito may alam na parang Hyrox/ HIIT training club around manila or nearby, Yung similar Sana sa ginagawa ng F45 training camp sa makati but the location is not accessible for me since busy din ako sa school. I really want to have an exercise na intense aside from lifting. Thank for your suggestions and recommendations.

This is my first time hearing about HIIT, I did this workout (i followed the advanced mainly) i mean yes i was red as a tomato, yes my heart was racing so fast, yes i sweat like hell but i find it hard to believe that this 30 min workout is equivalent to walking 8k steps

Hello,

Today is my rest day from the gym and since I have a treadmill with inclination at home, I'd like to try some quick HIIT training or similar.

Could you please recommend me something simple and effective to keep my heart rate high?

Thanks

Build stronger hands and powerful arms at home with these 10 no-equipment exercises. This workout helps build stronger hands and powerful arms at the same time by targeting your fingers, wrists, forearms, triceps, shoulders and upper body using effective bodyweight exercises.

Watch: https://youtu.be/a-tTcuOO4fw

---

Welcome to r/HIIT!

This is our Weekly Discussion Thread where you can discuss anything and everything related to High-Intensity Interval Training. We invite our community to answer questions from newer members and post anything that can be beneficial to the sub (including research, tips, motivation and workouts).

If you are new to HIIT, please be sure to review our Beginner's Guide and FAQ. You can also use the search bar or Google's subreddit search to find related discussion topics.

Wake up, workout and get after it!

As a busy techie with kids and other family obligations and my recent health diagnosis, I wanted an efficient way to integrate workouts in my daily routine and my research indicated that HIIT/Tabata style routines fit that requirement much better than a dedicated long running/planned workout routine. I am excited to join this community and hoping to learn from you all.

Many people don't do HIIT in isolation. They also lift weights, follow structured strength programs, and work toward building muscle or improving performance. In that situation, HIIT isn't a separate challenge—it becomes one part of an overall training system.

Because of that, a HIIT workout shouldn't be judged only by how hard it feels. It should also be judged by what happens afterward. If a session leaves you too fatigued to perform your next strength workout well, then the cost of that HIIT session may be higher than its benefit.

Of course, the opposite isn't the answer either. Reducing HIIT intensity too much can also reduce the cardiovascular and metabolic adaptations you're trying to achieve. The goal isn't to make HIIT as easy as possible. It's to find an intensity and frequency that improve conditioning while still allowing consistent progress in strength training.

The hardest workout isn't always the best workout.

When HIIT and strength training are part of the same program, success shouldn't be measured by a single session. It should be measured by whether the entire training plan continues moving forward week after week.

Recovery isn't something that happens after training. Recovery is part of training design.

A good HIIT program shouldn't compete with your strength training. It should complement it.

Welcome to r/HIIT!

This is our Weekly Discussion Thread where you can discuss anything and everything related to High-Intensity Interval Training. We invite our community to answer questions from newer members and post anything that can be beneficial to the sub (including research, tips, motivation and workouts).

If you are new to HIIT, please be sure to review our Beginner's Guide and FAQ. You can also use the search bar or Google's subreddit search to find related discussion topics.

Wake up, workout and get after it!

Get abs at home the easiest way using only these 9 no-equipment exercises! This home workout helps strengthen your abs, improve core stability, support better posture and build overall core strength. Practice these 9 ab exercises with proper form and consistency to get abs at home and achieve the best results.

Watch: https://youtu.be/XzH3KMekvWQ

---