Make 'Em Sweat 4

Running, yoga, weight training, sports ar eall practical and valid ways to stay fit, but have you tried fucking? Not that slow, romantic sex, but that hardcore, thick you're going to pull a muscle, collapsing into a puddle of sweat after you cum, fucking? If you don't know what I mean, may I present these scenes as exhibit 1-4 on how to Make 'Em Sweat.