If one of your New Year resolutions was to do a Tough Mudder this year then we have some important news for you.
They're even tougher this year. But let's face it, that's all part of the fun.
In 2016, courses will feature more than 20 gruelling obstacles over 10+ miles as well as seeing the return of old favourites including the Pyramid Scheme, King of the Swingers and Electroshock Therapy.
The Block Ness Monster
Check out the video above for full details.
And if you're still unsure, here's what some members of the Huff Post UK team thought when they took up the challenge.