Have you ever heard of the Fungo Brothers? Neither have we, but apparently you should have. For not only did they revolutionise fitness, they were also the spitting image of man-mountain-turned-actor Dwayne 'The Rock' Johnson and TV chat show host Jimmy Fallon. 

The Rock appeared on The Tonight Show to promote his new movie Hercules. When asked how he got in shape – or, should we say, even more in shape – for the role, Johnson revealed that he had turned to his old VHS tapes of the Fungo Brothers, a fitness duo who were way ahead of their time, inventing, among many other things, the shake weight and Thigh Master.

Luckily, Fallon had some archive footage of the brothers. Watch, be inspired and remember: you gotta hustle for the muscle.