It starts on the 31st March until 19th May 2013.
It is £5.00 to sign up and then the challenge begins - you have 50 days of running, rowing, swimming, cycling 5k or any equivalent 30 minutes of exercise a day.
Read more about it at this website: http://www.5x50.co.uk/
If any ETT'ers are interested I would be happy to sign up and create an Empty the Tanks team and when the action starts there will be a website that will rank us against other challengers.
Let me know if anybody would like to join me and I will register as soon as possible.