In the world of high-performance machinery, whether it’s a vintage Porsche or a custom-built rifle, we understand that results come from a deep knowledge of the mechanics. We study the torque, the ballistics, and the maintenance schedules. Yet, when it comes to the most primal and rewarding part of a man’s life—his sexual connection with a woman—too many of us are flying blind, relying on half-baked advice from locker rooms or the hyper-exaggerated scripts of the adult film industry.

There is an old cliché that men don’t like to ask for directions. While that might be a tired trope when it comes to a Sunday drive, there is one area where "winging it" is a guaranteed recipe for failure: the bedroom.