I'm an almost 17yr old guy except i am very very skinny and weak...i want to put on some muscle mass and im on protein powder for medical reasons...I have a rower, treadmill and bikes... Which one of these should i use most to quickly gain some muscle mass??
Lyk i'm not looking to be buff; just at least a bit toned. I've already got really good cardio-vascular fitness but im really weak and want to have at least toned abs within a month, i'm prepared to do the hard work and i already use the treadmill and bike but i don't seem to be able to gain any muscle, i have no abs kinda embarrassing. Got any ideas on what i should do?
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