Study Supplement: PrimaVie (Natreon Inc), is a a purified and standardized shilajit extract for nutraceutical use. Research indicates that PrimaVie® has targeted action for increasing energy, revitalization and anti-aging. PrimaVie® also works at the cellular level, playing a direct role in the synthesis of ATP, a compound that supplies the body with energy, and healthy mitochondrial function. Findings on a recent murine study revealed that PrimaVie (PV) significantly changed the expression of genes related to muscle function (unpublished data). Based on these facts, it was thought of interest to study the effect of PrimaVie and exercise training on human skeletal muscle adaptation. Participants will take: