After doing two 4 week sessions with them over the winter, I lost 30 pounds and 4 dress sizes and went on the best vacation my Husband and I can remember (I wore a bathing suit!). The classes were motivating and fun, even during winter's blustery weather, and Kimae, the trainer, who is equal parts serious and humorous, often said just the right thing to challenge me through 3 more push-ups or another 5 crunches. The affirmations during the cool down stretch were especially motivating, often staying with me throughout the day. Team drills were a great way to get to know the other women in my class and with an exercise like sack racing there were often alot of laughs involved. A good thing to look forward to when you're working out at 7 a.m. If you are looking to slim down and shape-up, I would highly recommend them!