🏋🏻‍♂GOOD FOR: Since using glucose as fuel requires less oxygen than using fat for fuel, at higher intensities — when you have less oxygen available — your body needs to rely on glucose. Therefore, longer and more intense workouts may require you to restore your glucose levels while exercising. Sip in between your sets and feel the difference.

Glucose gets broken down from the carbohydrates in foods and drinks to provide all your muscles and organs with fast-acting fuel. When you work out, your body uses glucose for muscle function, and after you work out, it also requires glucose to rebuild your muscles with protein. The higher the intensity of your exercise, the more glucose you need for fuel.