I came across this challenge while I was doing some research and I think it's a great challenge!

The goal of the 50 million pound challenge is to, together as a community, lose 50 million pounds to fight the obesity epidemic.

The webiste lets you keep kind of like a journal to track your activity, weight and meals! 

They're currently at 5,818,148 pounds right now.  They got another 44million pounds to go!

It's a free to register, so register those pounds you've lost now and contribute to the challenge!

For more information, google 50 million pound challenge