Why not? HIIT is based on that person's body. They will hit their bpm much faster than a trained person.
I started with HIIT last year in august (2023),reaching 181 bpm max and averaging 176 (I'm 35).
Now, 1.5 years later, I do the same exercise (with a lot more strength) and hit 156 bpm average, 176 max. If I halt for 10 seconds (phone ringing), my bpm plummets (150 or even 148) and it's hard to bring back.
On top of that, I have to be more careful not injuring myself: my muscles are a lot stronger, so if I use all my strength in an attempt of pushing my bpm, I can hurt my body.
I feel terrible with HIIT either way, which means it does work
Why not? HIIT is based on that person's body. They will hit their bpm much faster than a trained person. I started with HIIT last year in august (2023),reaching 181 bpm max and averaging 176 (I'm 35). Now, 1.5 years later, I do the same exercise (with a lot more strength) and hit 156 bpm average, 176 max. If I halt for 10 seconds (phone ringing), my bpm plummets (150 or even 148) and it's hard to bring back. On top of that, I have to be more careful not injuring myself: my muscles are a lot stronger, so if I use all my strength in an attempt of pushing my bpm, I can hurt my body.
I feel terrible with HIIT either way, which means it does work