Speed drills to wrap up training today. I've had five professional MMA fights. I've done two full Ironman races. Yet at 37 years old, I am becoming more and more aware of how little I know about the human body. One of the best decisions I've made this year was to hire a personal trainer. I'm on a mission to truly understand, and master the functional movement of the human body. | Sean Whalen

7.9M views · 10K reactions | A strange encounter for its time. Two martial artists, but from different disciplines. Both were trying to prove that their technique was superior. It was kickboxing versus Muay Thai on the night that would change the way we watch fights... the night the MMA was born. | The Ring | Facebook