Uh...well, I wouldn't call it healthy per say, but it's not harmful.
Yes you can. Urine is sterile. That is why if your stuck in the desert with nothing to drink it is recommended to drink your urine.
no
Protein nor sugar should not be found in the urine of a healthy person.
Normal, healthy urine is sterile when it's in the bladder and does not contain germs.
5 seconds
no if you eat them you will die right after.
I'm not sure if it is healthy, but the acidic juices in the stomach will naturalise sperm if ingested as it is alkaline.
Controls are used as a healthy sample to compare another person's urine test to. Knowing what is healthy helps doctors to see what is unhealthy.
The amount of protein in your urine that is healthy varies from person to person. Some healthy people spill protein in their urine regularly. Talk with your health care provider for advice specific to your situation.
There is nothing there that can do you any harm assuming she is a normal healthy person.
if you swallow sperm it is not a big deal just get over it (sometimes it even tastes good)
A healthy bladder can hold up to 16 ounces (2 cups) of urine...