This kind of training is use in WorkOut and Crossfit WOD andmartial arts like Yawara-Jitsu, Kickboxing, Boxing, Muay-thai,Karate, Judo, etc.

Lap2Lap:
· Keep a record with the result of each workout.
· Create lists of music to listen while you train
· Create training sites
· Check weight
· Share results with friends