The idea is to increase your aerobic fitness level while burning fat. Max interval training has you work as hard as you can for 3-minute intervals, with 30-second periods of rest in between. According to the Insanity web site, exercising at this extreme intensity level will help you burn up to 1,000 calories an hour.

Why is insanity workout bad?

But researchers also found that these types of workouts put a lot of stress on the body. This can be potentially dangerous for someone with a health condition, who isn't in good physical shape, or who has certain musculoskeletal injuries.

Is insanity still a good workout 2020?

Insanity is one of the first serious home workout programs. Even though its been around a while, few can rival the intensity and results. Insanity remains at the top of the charts for home fitness and is the undisputed calorie burning king.