Alex lost 60 pounds on a low-carb diet. He also knows several people who lost weight following a low-carb diet. It actually worked for each of them.

Now he is on intermittent fasting — no food for 16 hours a day

• on weekdays, skip dinner
• on weekends, skip breakfast

My plan — skip breakfast on most days, so no food from 10pm – 2pm (or pushing further)

Alternate-day fasting, which this study examined, is one option. Other popular ones include a 12-hour daily fast, a 16-hour daily fast (often called the “Leangains” diet), a 20-hour daily fast (known by many as the “Warrior” diet), or a 24-hour fast once per week.