>>76642626
Real gains come from good diet and efficient routine. Everyone knows this.
A good diet is the difference between making it, and being eternally skinnyfat with 0 gains. Your body is a fucking chemical reactor that turns food into energy, extracts essential vitamins, minerals, and amino acids, and synthesizes those into muscle. You can work out all you want, but if you don't eat the right things you're gonna be an eternal DYEL.
Also genetics.