Everything! The staff! The environment! The positive energy! I like that 30+ people can work out together and everyone be at a different level. They gear it towards your ability. That's what makes it a success.
I don't have to think about what workout to do or at what intensity, I just follow the coach and the rest of the class, so I'm doing better workouts than I do by myself. I burn more than 700 calories in one hour of Orange Theory, so it's fast and effective. I like being able to monitor my heart rate and calories during the workout, so I know when to adjust and how I'm progressing. The coaches also make it great by keeping us motivated and on track throughout and playing good workout music!
I love the workouts and how they change everyday. I'm never bored or doing the same thing over and over. The coaches are always excited to be there and very motivating as well as supportive. The staff has always been exceptional, nice, and helpful. I've been to other studios before, but the Campbell is by far my favorite location because of all the above reasons. I recommend this workout to my family and friends all the time, even those that are out-of-state. (I got some new members for OTF out in LA and Denver.) =)
The coaches!! Each of their playlists and energy are awesome. I have my favorites and plan my schedule around when they will be coaching so my only request would be that they coach more so I could have more choices :)
And the workouts are amazing- I like that it changes up each day to focus on different muscle groups and different levels of cardio.