Allmax Vitastack 30srv OrangeVitamins serve primarily as regulators of metabolic functions, many of which are critical to exercise performance. Depending upon the nature of their sport strength, speed, power, endurance, or fine motor control, vitamins are crucial for athletes in order to increase specific metabolic processes important to improve performance. Vitamins and minerals are also crucial for a variety of activities in the body such as turning food into energy and keeping