improove stamina, naturally

"In human trial Cordycepin showed increase in time to exhaustion, increase in             maximum oxygen consumption, and reduction in lactic acid concentration." 

Cordycepin is a constituent specific only to cordyceps that  helps improove athletic performance by reducing fatigue, being able to preform longer, and requiring less recovery time during rests.  Both "on the track and in the bed" as they say.

-​“Cordyceps militaris: An Overview of Its Chemical Constituents in Relation to Biological Activity,” Foods. 2021 Nov; 10(11): 2634. Published online 2021 Oct 30. doi: 10.3390/foods10112634    PMCID: PMC8622900 PMID: 3482891 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8622900/