I see many guys lifting too lightweight but still have good physique. I hve also seen some guys who lifts heavy and still have good physique. What's the reason behind. I personally go for light wt which gives sore feeling plus pump. So which is preferable heavy or light with pump? Does it depends on muscle structure an genetics?
When I go for heavy (rep range 6-8) I sometimes loose mind to muscle contact and whole set goes waste with cheating.