Whether it's epic showdowns like Pacquiao vs. Mayweather, or once-in-a-lifetime fights like Mayweather vs. McGregor (if they can ever come to a deal, of course), boxing is the ultimate spectator sport.

But what about guys that want to try their hand at getting in the ring? This guide on how to knock a dude out—in the name of self-defense—will probably come in handy. But even if you're not looking to get KO'ed out in the ring, adding some boxing moves to your regular workout routine will seriously improve your strength and agility.

A great way to incorporate boxing into your fitness regimen, especially if you're trying it for the first time, is to start with practicing your punches. Alberto Ortiz, owner of Work Train Fight in New York City, takes you through the four basic punches (jab, right cross, uppercut, and hook), plus he doles out two exercises to help strengthen your punches.

This workout is proof that boxing isn't just fun to watch, it's also an awesome total body workout.