This is necessary. According to Kegel Sports official website, Kegel Sports is a pelvic floor muscle (PC muscle) training APP, which is a pelvic floor muscle training assistant. You can start exercise classes anytime and anywhere, check postpartum functional recipes, give live video demonstrations, explain detailed exercise movements, freely set reminder time, support lazy people to remind themselves automatically, get up at three o'clock in the morning, noon and evening, and carry out the training to the end.