I am 10 days into it, and have been to 6 sessions. I love it so far. I'm the oldest, and most out of shape guy in every class, and I don't care. I'm sweating buckets, flopping around like a dying walrus at most exercises, and it's awesome. It's exactly what I needed....a little competition to keep moving forward, a little coaching, and just enough pear pressure to keep me working through exhaustion. Just being honest about myself...I would NEVER work this hard alone. Getting beat by a 20 year old girl pushes the pride button and pisses me off just enough.
And yes, it is a "class", especially at the beginner level I am at.
Haters go ahead and hate..."Super Athletes" go ahead and sneer because you work just as hard all on your own for free......I don't care. In 6 workouts, I already feel better. I love it.