Cardio duration

[Sinister613]

Been doin more hiit sprints lately, 15 mimutes and im gassed

[SisterSteel]

You can do low, slow cardio or you can do interval cardio. Both are effective. You can sit on a treadmill for 45min at a steep incline walking briskly or you could run stadiums or pull a sled.

The most important thing is to just do something. I prefer interval cardio/conditioning training.