You need to wear loose, cotton underwear and you can sleep on your back or side.
Babys for starters can not be put to sleep as it is far too dangerous.
Circumcisions in people who are not infants is generally done under general anesthesia, so yes you would most likely be asleep for the procedure.
No, the penis is not shortened by circumcision.
No circumcision is not beneficial to health. on the contrary it is harmful.
No, penis size has nothing to do with circumcision.
Circumcision has nothing to do with infertility.
Briss or bris or brit means "covenant". The full form is brit milah, "covenant of cutting". Briss etc is a short way of saying the Jewish ritual of naming a boy, including circumcision and a shared meal. Jewish circumcision is commonly done much more quickly than medical circumcision, often with no more anaesthetic than a sop of wine, but it still must involve the foreskin being torn away from the penis-head (glans) before it is cut. This commonly throws the baby into shock so that he seems to "sleep right through it". Brit Shalom is a naming ceremony with everything but the circumcision.
When you develop SERIOUS conditions where circumcision is the Only option.
The circumcision scar is permanent and it can not be gotten rid of.
No, it is nothing to do with it. Circumcision is the removal of the foreskin from the penis.
Surgery can extend, but the surgical procedure that does it is not called circumcision.
A Jew that does circumcision is called a Mohell