I split my time between Santa Monica and Scottsdale. OTF is the quintessential workout when I am in Scottsdale. No gimmicks. No BS. It is an hour of honest, body pushing goodness. The heart monitor keeps you on track. And if you do as they ask and push your body into Zone Orange for the appropriate amount of time... your metabolism gets kicked into gear and you get to take yourself home in that euphoric state of residual after-burn.