What is a sure-fire way to rev up your metabolism before pumping iron to help boost your calorie burn post-workout?

1. By snacking on protein, such as meat, nuts or legumes, as part of your s
2. By taking a five-to-10-minute power nap before beginning your workout.
3. By eating a high-carbohydrate, low-protein diet to enhance the benefits
4. All of the above.