Well for me I do both when I walk in the gym what ever I'm in the move to do I do They both work for me.When I first started at the gym I started doing cardio and that helped me lose a little weight and prepare my self to start doing weights as I look in the mirror every day looking at my body as I kept doing cardio looking In the mirror my body was showing me that It was time to hit the weights to tightened up my skin In places that needed. I always listen to my body It will tell u what exercise to do so yes we all different. What work for u might not work for someone else every body work different and for body building its more to it then weights it take a lot of this and that.I give bodybuilding the up most respect because it takes alot of work to become a bodybuilder then just working out believe me.I no because I tried but wasn't for me.