Go for a massage. The technician is a little girl. She told me to take off my clothes, lie face down, and get in position. I took them off and lay down. She pressed twice and said: “Your muscles are too tight. Do you not exercise regularly?” I said: “I do exercise. When it’s just one person, you can’t build muscles.” She asked: “So how can one person exercise?” I said: “Running.” She laughed and said: “Running can train your back like this?” I said: “Then maybe it’s because my running form isn’t right.”