This challenge is actually called "The Freedom Challenge." Their mission is to free 1,000 women in 2016 and 100,000 women by 2026.
Basically what they are asking you to do is to sign up with nine other women and pledge to walk 10,000 steps a day. You would invite other people to sponsor you, and that money you earn goes towards helping enslaved women and children.
If you don't have nine female friends you can join an already established team, and walk with them. They aren't asking you to run a marathon or do anything extraordinary, just walk 10,000 steps everyday.
But if you don't want to walk you can always sponors a team, or just donate one time.
I am not asking you to sign up and do something you don't want to do. I just thought that this was a really beautiful thing