HIIT, High-intensity interval training can burn fat, decrease inflammation and fight against diabetes and heart disease. But, it can also do some serious damage.
1.Why Does HIIT Work?
When you push your body to an extreme, it doesn’t know if you’re working out or fighting for your life. So, it releases a stress hormone called cortisol. This hormone helps build muscle and burn fat.
2.But, There’s A Bad Side To This
If you do HIIT too frequently, your stress hormones don’t know when to call it quits. They can stay elevated. Cortisol is one of the stress hormones. When it stays elevated, the body can retain fat and lose muscle. It can also lower your immune system.