재
재밌는거미36·Dumbbell Bicep Curl·2mo agoIs it better to do one at a time, alternating between each arm, or to do them all at once? I feel like doing one arm at a time was more stimulating!
Is it better to do one at a time, alternating between each arm, or to do them all at once? I feel like doing one arm at a time was more stimulating!