Now you're talking my Jam!
You can do what I do on the stationary bike. It works the same if it's on a treadmill or a bicycle. What I do was developed by McMaster university and is the equivalent of 50 minutes of moderate intensity exercise.
It's called the one minute workout. (It really takes 10 minutes)
The intervals are.
2 minute warm up.
20 second sprint
2 minute rest
20 second sprint
2 minute rest
20 second sprint
3 minute cool down
Now for the sprints you have to really sprint. It's a full blow 100% max output. Imagine you need to outrun a falling building. That kind of sprint. In the rest period you're not just standing resting, but you're doing very low intensity walking.
You can get more info from the book:
https://www.amazon.ca/One-Minute-Workout-Science-Smarter-Shorter/dp/0399183663
If those intervals are too easy, you can start to reduce rest time and increase sprint time.
Edit: I created my own interval timer app for this sort of stuff. I'll message you the url if you're interested. But there are other apps available that are good for timing.
Something like
Integrative Therapeutics Cortisol Manager - with Ashwagandha, L-Theanine - Reduces Stress to Support Restful Sleep* - Supports Adrenal Health* - 30 Count https://www.amazon.com/dp/B002D2JYYG/ref=cm_sw_r_cp_api_i_RS67RDJSGQ1Q1Z31AG9W?_encoding=UTF8&psc=1
But I personally take ashwagandha or Theanine only.
I don't believe it is specific to HIIT.
Any significant aerobic exercise greater than 20m (30m even better) you will experience brain benefits. *Cheers*
I first learned of it here : https://www.amazon.com/Spark-Revolutionary-Science-Exercise-Brain/dp/0316113514
Is this the same Tabata Timer app , you’re using, but the ios version? It’s what i still currently use. I like that this one on android is customizable, especially since i do different sets with different abs exercises, and i can take down notes too within that saved workout. Only prob is i can only save two workouts. I’ll check those apps suggested and hopefully find a better one.
Author of the app here. I hope this post is ok for this sub. Here are the links to the app in the Apple App Store and in the Google Play Store.
So low intensity would be walking or hiking. You're not really pushing the body that hard to cause you to breath hard.
Moderate intensity would be more like a jog. Or sitting on a stationary bicycle and peddling for 30 minutes.
High or vigorous intensity would be running, sprinting, sports that cause you to run a lot like soccer/football.
You can do what I do which is sprint intervals. But if you have health issues, you can start off with not pushing your sprints hard. Instead of pushing to 100% you push to 50%-60%. Once you're comfortable with that you can start increasing how hard you can push.
Myself I have been pushing at 100% since I started and I was horribly out of shape. My cardio respiratory fitness has increase a lot over the last 3 months. What I have been finding is that I'm pushing harder and going faster at that 100%.
If you want to read the research behind this then I recommend reading the one minute workout book. It goes over quite a bit of the health stuff and discusses the exercise being used by athletes and people who have suffered heart disease as well.
https://www.amazon.ca/One-Minute-Workout-Science-Smarter-Shorter/dp/0399183663
Here are the intervals for the one minute workout:
2 minute warm up.
20 second sprint
2 minute rest
20 second sprint
2 minute rest
20 second sprint
3 minute cool down
Use this app to set the run time, rest time and the number of sets so you don't have to look at the clock. It lets you know when the time is up. Makes stuff easier. https://play.google.com/store/apps/details?id=cc.dreamspark.intervaltimer&hl=en