You’re moving freely through a modern dance warm-up and pop!—something pinches between your shoulder blade and your spine. Usually these mild muscle spasms disappear after a short tissue massage, but even after years of arm stretches, some spots on your back are just too hard to reach. Not to worry. Nifty, lightweight gadgets, like the DaVinci Neck Massager and the Thumbby Soft Massage Cone can lend a hand. Lay on the floor with one of these devices beneath the problem area and let the tool do the massaging for you. Soon, your muscle will be relaxed and pain-free, and you can get back to dancing. See www.bodyback.com and www.thumbby.com.