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A looked at the effects of extreme conditioning programs like the Insanity workout, CrossFit, and others, and tried to determine if these workouts are safe.

The researchers found that Insanity workouts have about the same rate of injury as weightlifting and other recreational activities.

But researchers also found that these types of workouts put a lot of stress on the body.

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This can be potentially dangerous for someone with a health condition, who isn’t in good physical shape, or who has certain musculoskeletal injuries.

The same review also found that the Insanity workout had little to no effect on improving physical fitness or body composition of participants.

But researchers also said more studies are needed.

A looked at the impact of high-intensity interval training and found that it burns a higher amount of calories than moderate-intensity training. It may also reduce body fat and waist circumference, according to a .

Due to these mixed results, more studies are needed to determine the efficacy of the Insanity workout.

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