To catch up on the previous installment of the Esquire Fitness Challenge and to learn more about our upcoming American Ninja Warrior contest, visit esquire.com/fitnesschallenge. Like coitus and cunnilingus, libido is a vaguely clinical term that no man should ever utter aloud (except, of course, in the public reading of erotic fifiction, in which case, a little louder, please?). But a man’s libido—his interest in and capacity for initiating, maintaining, and completing intercourse, i.e., his sex drive—is a direct reflflection of his cardiovascular, hormonal, and mental health, and if you’re not working to protect it, your sex life isn’t the only thing that’s going to suffer. Here’s what to keep in mind:
> Hit the gym. Testosterone is essential to a strong sex drive, and weight-lifting workouts have been shown…
