These guys are the best!  I started going to Tribe over a year ago and I was immediately a fan.  I consider myself to be in good shape and their workouts always kick my butt in the best way possible! All the trainers I've had there are super encouraging and know their stuff.  I have really appreciated their tips to help me improve my form - tips that stay in my mind and motivate me to do better! I have done a lot of different exercise classes (bootcamp/HIIT specifically) and there is something about the classes at Tribe SF that makes me push myself that extra bit -- lifting heavier, going for extra reps, trying moves I wouldn't typically -- and it's had a huge impact on my overall fitness.  Can't recommend this place enough!