Have you ever wondered how Wolverine stays so fit at 47? To get in shape to play the role of Wolverine, he follows a 16:8 fasting diet, where he only eats during an eight-hour window and fasts for the remaining 16 hours in the day. He also follows carb cycling, where you eat a lot of carbs after your workout, but strictly limit them on your off days. For his daily workout exercises, he swims in the ocean, runs an odd seven or eight miles or practices boxing. In a nutshell, he is a fitness machine.