I’m signed up for the 2016 Tone it Up Bikini Challenge. I’ve signed up in the past just because everyone else was, but I’ve never followed through. Either because I felt I wouldn’t be able to keep up or I’m doing to many challenges at once. Since this one also has a 100 mile challenge I felt that I would be able to keep up since I run and I want to challenge myself to run more. Last year I was able to get to the over 80 miles. The plus about a popular challenge like the TIU one is that seeing everyone else sign up for it makes you want to sign up too. Anyone can sign up for the challenge. I also love the big community of TIU people. Weather or not your a member of TIU everyone is encouraging and helpful.