What is HIIT?

[GrifteR]

I saw that sticky up there but i didnt want to search for what HIIT actually is. So can someone give me a brief overview as to waht HIIT is? Can I do it while gaining muscle mass and getting bigger? Or is it just for people who want to lose weight? Thanks in advance.

[Ironman8]

From what I understand, when you do HIIT, it targets fat instead of carbs.

IMO, if you do HIIT right, you can can muscle while losing fat.

[Stabber]

HIIT is doing high intensity cardio that gets your heart pounding very quickly, and basically drains the hell out of you . An example would be doing sprints. But doing them balls to the wall. You shouldnt be able to breathe afterwards if you do them correctly :D