Intermittent fasting isn't one-size-fits-all. Renowned cardiologist explains five types, including water fasting, 5:2 fasting, alternate-day fasting, and peak fasting. Each method offers unique ...

You’re also given a glycerin liquid to mix with water, which “provides the body with an alternate energy source to use instead of lean body mass during days 2-5 of the fast,” as well as ...