Pelvic floor exercises on TikTok

There is a woman on TikTok that comes up on my FYP pretty often. She’s holding a replica of the women’s uterus and she’s saying “squeeze, let go, squeeze, let go, squeeze for 7, 6 5 4 3 2 1 and let go” As a form of pelvic floor exercise. I do it every time I’m just wondering if it works lmao.