I had a membership for a couple of months a few years ago. To be honest, I didn't feel it was intense enough for me, although was over 250 lbs at the time. I didn't break much of a sweat and wasn't sore after at all. Then when I was the inches-loser for the month, that actually sealed the deal for me. I didn't feel I was making good progress, yet I was making better progress than ANYONE at that center!
I really like Jillian Michael's 30-day Shred Video. I feel like that's a good workout when you don't want to commit much time. Intense, but short. Plus I feel sore the next day so I know I'm working undeveloped muscles.
Started - 12/25/11 at 265 lbs.
ONEderland - 2/16/13 at 199 lbs.
Goal - Normal BMI! - 7/17/13 at 155 lbs.
Restart - 1/29/15 - 185 lbs.