Intermittent fasting improved blood pressure and resting heart rates as well as other heart-related measurements. Physical performance. Young men who fasted for 16 hours showed fat loss while maintaining muscle mass. Mice who were fed on alternate days showed better endurance in running.

Why intermittent fasting is bad?

Fasting may also lead to an increase in the stress hormone, cortisol, which may lead to even more food cravings. Overeating and binge eating are two common side effects of intermittent fasting. Intermittent fasting is sometimes associated with dehydration because when you do not eat, sometimes you forget to drink.

Is intermittent fasting actually effective?

A systematic review of 40 studies found that intermittent fasting was effective for weight loss, with a typical loss of 7-11 pounds over 10 weeks. [2] There was much variability in the studies, ranging in size from 4 to 334 subjects, and followed from 2 to 104 weeks.