Carbs. Although the low-carb craze might say otherwise, carbs are our body’s main source of fuel. If you do intense workouts, you will need carbs, or you won’t have enough energy. If you do a shake, be sure to include carbs — or a banana is a great source of low fiber/high glycemic carbohydrates that you need for exercise.
Water. Be sure to hydrate throughout the day. It takes a couple of hours for your body to absorb the water, so you can’t just drink right before exercise. Make it a habit to drink water regularly throughout the day.