I just started using this, but my buddy said he has been logging his hours for months.
You log the amount of hours you workout, and ever hour you log Eric Harr will donate 5 dollars up to a max of 25 dollars a week for the fight against poverty. It basically uses the honor system.
So if you workout 5 hours a week, in one year you donated 900 dollars.
Heres the link.
http://www.care.org/features/workout...&s_src=default