While personal trainers get certified and learn a training philosophy, the sensei is a fitness philosopher.

What's the difference? 

The difference is in continuing to develop independent thought the sensei has your fitness program fitting your lifestyle, as opposed to having your lifestyle need to fit your fitness program. 

The Fitness Sensei will adjust your workouts depending on how your body is responding to the exercises up to and even during your workout, to make sure that you get the results that you are looking for from every moment during your sessions.