Are you struggling to engage the right muscles during your workouts? It can be tough to identify weak links in your kinetic chain and protect your spine, but there is a concept that can help. Introducing "masses and spaces," a coaching cue that can improve your posture and focus during training. ORIGIN OF THE MASSES AND SPACES CONCEPT At a TRX coach's training workshop, I learned about the concept of "masses and spaces." This refers to aligning your body in ideal posture whi