123 GO - After the countdown, it is 45 seconds of training and 15 seconds of rest. Both are indicated by countdown.
After the very successful first edition, here is part 2. Better and more varied than No. 1.
More styles of music, more recognition but always with a lot of powerrrrrr. The formula has remained the same; a mix for INTERVALTRAINING only! This must be a blast, listen and shiver!