Simple pelvic exercise: open your feet shoulder width, put your hands on your waist, keep your upper body still, and slowly twist your waist. This action can make the blood flow in pelvis smoother;
Then stand still, lift one thigh, and then put it down until the knee is bent at 90 degrees. Turn left and right. Standing still for at least 1 min and doing it for 2-3 minutes can promote blood circulation in the groin. Repeated exercise can also help serotonin secretion and relieve stress.