My 17 year old daughter (high-level athlete) has been working out here and has seen tremendous improvement to her overall strength, stamina and balance.
Upon my daughter's recommendation, I started working out with Jim twice a week. It's a very non-intimidating atmosphere (which is important to me!); Jim's personal approach to each workout is a big plus---each workout is different and his expectations are very high.
No matter your starting point--if you're looking for an @ss-kicking workout in a friendly, non-intimidating atmosphere, with a certified trainer who is an excellent motivator, I highly recommend Integrated Fitness.