Long lines, high-calorie meals, gift shopping, traffic congestion, air travel, unavoidable meetings with annoying relatives—the holidays offer plenty to stress about, and 90 percent of people do over at least one aspect of them, according to a recent survey by the Consumer Reports National Research Center. All of that stress doesn’t just sabotage your peace of mind; it can add inches to your waist. What’s more, it can impair recovery and muscle function for up to 96 hours after a tough workout, according to a recent study in theJournal of Strength and Conditioning Research. The good news: You can reverse the damage in just 10 minutes a day by sitting quietly and focusing on your breathing. Practiced consistently, such mindful meditation can reduce psychological stress by up to 44 percent, according to a study by West Virginia University researchers.