Add jiu jitsu under Activities
I am a trainer, and I also do Jiu Jitsu. It is a great exercise/activity. I am able to add it as an activity on another app... the list of possible activities is very small in comparison to others. Jiu Jitsu, martial arts, surfing, there are so many more details options that don't belong under general because that doesn't really help measure progress of other activities outside of the workouts inside the app.