The science experiment I do know was The Colorado Experiment involving Casey Viator back in the early 1970s. Yes it was old muscle that he has lost and he was underweight, but the point remains in that he gained over 60lbs in under a month using high intensity training, and it was documented. You do not need to be spending hours doing volume; it’s about overload, stress, intensity and pushing yourself to the absolute limit. Of course with sufficient nutrition and recovery too. @hubermanlab #MrOlympia #Bodybuilding #Gym #Training #Muscle