Tired of his younger brother's scrawny physique, an elder college bro decides to help him bulk up with a rigorous, hands-on training session in the locker room. Starting with intense calisthenics, the elder brother pushes his sibling to his limits, spanking him for every missed rep. The teen's sweat and grunts fill the air as he struggles to keep up. For the grand finale, the elder brother demonstrates proper form by having the teen ride his thick, bare cock until he's ass-fucked raw and panting.