Former Wales international Richard Parks had to retire from rugby just over a year ago because of a persistent shoulder injury.
He is now, amazingly, making the final preparations to take on the 737 challenge.
ITV Wales interview:
Former Wales rugby star Richard Parks set for the ultimate challenge ITV Wales
Starting in December he will climb the world's 7 tallest mountains on the world's 7 continents and make it to the North and South Pole all in 7 months!
Noboday has ever done this before.
He's done an interview on ITV Wales which is simply inspirational, you have to watch it.