High intensity interval training (or HIIT, for short) sounds simple enough: go as hard as you can for a short period, rest, repeat, and reap the benefits. HIIT is great, for sure, except what most people consider HIIT isn’t actually HIIT. Your all-out effort makes all the difference.
One thing that isn’t always clear is that unfit people should not try HIIT. Without a decent fitness base HIIT is counterproductive and more likely to cause injury. Beginners should stick to longer and less intense intervals to build up fitness and form as preparation for the demands of HIIT.
Do you want to run faster? Great! Let’s run faster today. Then we’ll take a little break. Then we’ll run faster again a bunch more times. There’s a whole family of these interval workouts that runners call “speedwork,” and including them once a week or so can help you achieve faster race times later on.
I could see enterprising cyclists using the information to their benefit.
For me: swimming came naturally, and I got some tweaks. Cycling, where I have others to look at, follow, and/or attempt to emulate – I’ve made progress without a training plan. Running – progress has been glacial, if at all. None of which I train with, or reflect upon, my Garmin. I’ve been running a more flat route for 10 KM, and I think there’s some payoff because I can stretch my legs. Between the broken rib and longer days, I’m looking to change my running habits.