It’s the hot trend, it has come a while back and decided to stick around: you’ve heard Madonna talk about it in her quasi-cockney accent; you’ve seen Sting recite his lines while in a handstand or some other wonderful bend. Aside from which, your coffee and pro-plus addiction is in full swing and you need something relaxing to balance it out. And with your partying/lectures/illicit-one-night-stand, some deep breathing might help, especially if you put down that cigarette and get out of that nightclub. Plus, ever since your new year resolution …