Being a boxer is more than just being able to throw a punch.
 
The rhythm and skill it takes to be an all-time great comes from pure physical talent, but also the hard work and dedication that a boxer puts in out of the ring too.

Modern-day boxers like Floyd Mayweather, Anthony Joshua, and Wladimir Klitschko are all physically fit—but for this list, MF looks back to the past. Joshua and Klitschko both post their best workouts to Instagram—see 33 times Joshua did intense training in the gym and 11 of Klitschko’s most badass moments—while Mayweather is gearing up for a (potential) fight with Conor McGregor.

MF judged these five legends to be the most amazing physical specimens to ever set foot in the ring, based on in-ring stamina, raw power, and an obsessive commitment to fitness.
 
Here are the best of the best.