Performance, stamina, recovery and overall health are tied in together. For centuries, various "tonic" herbs have been utilized in Chinese and Ayurvedic medical cultures, to help rebuild and promote vitality in the body, especially post illness or in cases of mental or physical exhaustion. Two key herbs stand out regarding their known ability to 'revive' or reenergize the body: Corcyceps sinensis and Astragalus membranaceus. In a search on Pubmed.gov, there are 853 cited papers on Astragalus membranaceus and 1118 on Cordyceps sinensis. This give us an idea of the vast amount of research conducted and the potential applications towards health restoration.