High Intensity Interval Training. It is relatively short bursts of high intensity cardio(high HR- 80 to 90% max HR) followed by periods of low intensity or rest(less than 60% max HR) so instead of jumping on a treadmill and running for 30 minutes you alternate sprinting and walking. Say 1 minutes of running then 2 minutes of walking, then repeated 8 to 10 times.
The claim is that prolonged cardio prevents or reverses muscle growth as it is consumed for energy. While HIIT supposedly uses quick sources of energy like fat. I dont know how true this is, but will say if you look at long distance runners they are usually skinny.
Edit: apparently assuming you dont lift and don’t eat properly it can be true, but if you also lift and eat right it’s not an issue.
High Intensity Interval Training. It is relatively short bursts of high intensity cardio(high HR- 80 to 90% max HR) followed by periods of low intensity or rest(less than 60% max HR) so instead of jumping on a treadmill and running for 30 minutes you alternate sprinting and walking. Say 1 minutes of running then 2 minutes of walking, then repeated 8 to 10 times.
The claim is that prolonged cardio prevents or reverses muscle growth as it is consumed for energy. While HIIT supposedly uses quick sources of energy like fat. I dont know how true this is, but will say if you look at long distance runners they are usually skinny.
Edit: apparently assuming you dont lift and don’t eat properly it can be true, but if you also lift and eat right it’s not an issue.