Conor McGregor trains for fight with Floyd Mayweather Jr on an underwater treadmill

An intriguing fight is due to take place in 3 weeks with the biggest name in UFC (mixed martial arts) taking on the biggest name in boxing when Conor McGregor takes on Floyd Mayweather Jnr in a boxing match in Nevada.

How do you train to take on the top pound-for-pound boxer of his generation? With an underwater treadmill of course!

Here is a video of a recent training session with Conor McGregor working on an underwater treadmill.

https://www.youtube.com/watch?v=ZmPPIvOul4M