There are two kinds of muscles wrapped around the anal canal, one is the random muscle on the outside of the anal canal, that is, the external anal sphincter and the anal muscle; one is not the random muscle, on the inside of the anal canal, that is, the internal anal sphincter, in defecation is completed by a group of muscle coordination. However, there are many people who feel that they are unable to pass the stool even though they have to exert a lot of effort during defecation, and they always have the feeling that they cannot finish the stool and the number of times increases. In my personal experience, this is like the “principle of squeezing toothpaste”, if the anal muscles are strong, all the stools can be emptied smoothly. Many people think that exercise is enough, but in fact it is not, the whole body exercise to exercise the muscles here is not obvious, and the anal exercise is targeted to exercise the muscles here. This exercise can solve the problem of constipation and difficult bowel movements. Additional: the correct method of anal exercise is: conscious contraction of the anus, (as usual in the street when you can not find the toilet, hold back the feeling of not going to the toilet), contraction, hold back a few seconds, and then relax for a few seconds, must be held back, not a collection immediately put, so a collection of a release count once a day, spend five minutes to do 20 times. No matter when, where, what posture does not affect, adhere to do a week will see the obvious results.