The Original Cleanse Makes a Comeback
The centuries-old practice of fasting remains one of the safest ways to detox your system and stay lean. It takes 24 to 36 hours (water is allowed) to reap the benefits. Fasting burns your body's fat stores, which not only hide your abs but also harbor toxins like pesticides. Many who fast describe a greater level of concentration and energy during fasting, and research shows the process may promote longevity. (Hilary Swank and Heidi Klum are devotees.) The health benefits might be due to the fact that our bodies were designed to occasionally go without food—how else could our ancestors have endured a hunt that might last several days?