When you think of spas, do you think they’re mostly for women? Well, not anymore. The International SPA Association (ISPA) reports that men now represent half of the spa-going population in the United States. Their survey pegs the average male spa-goer as being between 25 and 44 years old, earning over $50,000 a year, and working a managerial/professional job. Oh, and he’s stressed out — way stressed out.