Your Testosterone Is Hungry
Most pills skip this part. This is what is actually going on.
Strength, drive and testosterone are built from minerals, and modern food carries fewer every decade. Coffee borrows energy your body pays back with a crash. Shilajit's fulvic acid restocks 85+ trace minerals and carries them into the cell, where energy is made. Training or not, that is the engine it feeds.
Testosterone slides about 1% a year from 30, faster under stress and poor sleep. Flat workouts, low drive, a short fuse. The raw materials to push back are what modern diets dropped.
Foggy head by 2pm, running on coffee refills. That is a mineral gap, not a character flaw, and it is the easiest gap on this page to close.