KSM-66 Ashwagandha is an ingredient clinically proven to (a) build energy (b) improve muscle function, (c) increase focus. With respect to energy, KSM-66 has been shown to increase cardiorespiratory endurance and stamina. With respect to muscle function, KSM-66 improves muscle strength and size, and also accelerates muscle recovery. Endocrinologically, KSM-66 reduces cortisol and in men increases testosterone naturally and safely. With respect to focus, KSM-66 increases concentration and calmness under pressure. KSM-66 is one of the few ingredients in the sports supplements market today with significant effects on both psychological and physiological aspects of sports performance and energy production.