Spas News: What is Shiatsu? Last February, Forbes.com dubbed shiatsu one of the hottest new massage trends. But while shiatsu may have become popular in recent years at spas and health clinics in North America,... Spas try new therapies to tackle workplace woes When massage therapist Grace Mcnow first heard the term "BlackBerry Thumb," she didn't know what it meant. Now, treating it is a new and booming part of her spa business.