While certain studies suggest stem-cells that GHS may elevate levels of HGH or IGF-1 in humans, further research is necessary to ascertain whether GHS consumption actually results in notable improvements in body composition, workout performance, or recovery. Additionally, no research has investigated how GHSs affect well-trained athletes, leaving scientists uncertain about which muscle groups best oral peptides for muscle growth might influence the most or what types of workouts they are best suited for.