Years ago I backed up the sets that I enjoyed because I knew they could be taken away at any moment. Curiously, in '05 or '06 a number of sets were censored due to fears the justice department would try to make an obscenity case against SG for edgy content (this set being one that was censored and later restored). So I was glad I backed up then.
Now? Not so much. But then I'm really just coming back after an absence so perhaps I will again.
The 12 week challenge is a gym based thing. At the start you sit there and wonder what the fuck you had gotten yourself into but then the 12 weeks go by so quick and you wish you had a few extra weeks to loose a few more kgs. They run group discussion nights to teach you about nutrient, and have group training sessions, and then you work you butt off at the gym all the other days.