Challenging and went by quickly. I like the intervals on the treadmill because I wouldn't necessarily push myself to workout that hard on my own. I like the group setting and the staff couldn't have been nicer.
Diverse exercises. Motivating coaches. Quality workouts in an hour that never skip cardio and don't require planning which muscle groups to hit. No waiting for equipment. Focus on a strong heart in addition to a strong core. Heart monitor feedback keeps you honest about giving it your all.