Sphincters, our ring muscles. We’ve got four of them. orbicularis oculi, orbicularis oris, anal sphincter, urethral sphincter and nostrils. Ancient Taoists practiced contracting and relaxing ring muscles to improve the inner energy rhythm and strength of the body. 9-36 times
Seated. Contract the eyes shut for 10 seconds. Open.
Mouth. Suck in the mouth as if you ate a lemon for 10 seconds. Release.
Try to close the urethra as if peeing and stopping for 10 seconds.
Contract and release the anal sphincter for 10 seconds.
Flex and tense butt for ten seconds, release.