How to do a Sit Up - Tough Mudder UK

Do you want to have that six pack? We know how. Follow this guide of how to do a sit up and you will have those amazing abs in zero time.

83-year-old woman completes her THIRD Tough Mudder endurance race

How to Train for an Obstacle Course Race like Tough Mudder - easyfundraising

How to do a Sit Up - Tough Mudder UK

Obstacle Course Training