My name is Doctor Alexander Xavius, otherwise known as Doctor X. I'm a sex therapist specializing in the sexual behaviour of heterosexual males between the ages of eighteen and twenty-six. For the last three years I've been conducting interviews with willing participants from across the country asking them about their sexual activity. Within these pages are the transcripts of sessions I have conducted with my subjects. Their names have been changed to protect their identities, but the content of their experiences and experimentations remain true.

This is the confession of a straight guy named Aaron who, after a fight with his girlfriend, decided to let off some steam at the gym. There he began working out with the only other person in the gym at the time, a personal trainer named Sean. But as the adrenaline starts pumping, the hormones kick in. Will Aaron seize the opportunity to find out what it's like to mate with a man as masculine as he is?