Strong punch. Strong physique.

While not a bodybuilder, Mike Tyson had one of the most impressive physiques in boxing. But he wasn’t born that way – like all of us – he had to train tooth and nail to become not only one of the best boxers, but maintain one of the best physiques as well.

This throwback video gives some insight into the kind of training that Mike Tyson put himself through to be known as one of the greats. Check out this grueling work out by the champ above.