Breathing is fundamental to every form of exercise I can think of; the first concept I teach new Pilates clients is how to breathe. I might know this intellectually, but Hannah my swim coach at Equinox decided my freestyle breathing needed an overhaul.To prove her point, she even took a video of my form. Since my swim lesson last week, I have been paying extra attention to my breathing in all forms of exercise, from yoga to running, as well as when I am in the pool and I urge you to check your own breath. Are you unconsciously holding it at any point when you're working out? Are you raising your shoulders to inhale? When you inhale are you only filling the top portion of your lungs? This is a great little tool and if you're feeling bored with your workout, it gives you something productive to work with rather than watching the clock.