Do you want to know everything that is happening in your gym, studio or box, quickly, easily and directly from your cell phone? The new TIMELINE from Arena Blackcross is amazing! See the posts of teachers, instructors and coaches, comment, like, post messages, photos and images! And, what else can you do in the app? - TRAINING: information about the exercises, loads, repetitions, tips of execution and expiration of the training; - AGENDA: check-in, check time, reserve a place in the room and