Dr. John Webb discusses his experience with intermittent fasting, which involves alternating periods of eating and fasting. He started by fasting overnight for 12 hours and gradually increased his fasts to 14-18 hours a few times per week. This helped improve his focus and energy and develop a healthier relationship with food. Through intermittent fasting from September to December, he lost 50 pounds, plateauing until doing a longer 48-hour fast that helped him lose another 20 pounds. He encourages trying different diets to find what works best for individual bodies and lifestyles.