You most certainly can, sperm count has nothing to do with it.
No, for a person to get HIV they have to be in contact with a person that has HIV. sperm will not create HIV no mater where you leave it or what you do with it.
A young, fit and healthy man has no need to worry about increasing his sperm count. Nature will ensure his sperm count is high.
60 to 120 million/ml is the sperm count in case of healthy adult male.
yes
Yes, a lack of sleep can have a negative effect on a male's sperm count. It has been reported that a lack of sleep can reduce a man's sperm count by a third.
Women do not have sperm. If you're talking about a woman's vaginal secretions then yes it is possible and does on occasional occur during unprotected intercourse.
If the man truly has a zero sperm count then the chance of the man impregnating someone is zero. However men with low sperm count can impregnate women and men with high sperm count may be unable to.
It is very unlikely that eating catfish eyes will increase a man's sperm count!
Yes Onions do increase the sexuallity of a man. Usuallyit increase the sperm count hence the desire to increase the duration too.
No
Depends on the cause of the low sperm count
It's often said that cigerette smoking and tight boxers can reduce sperm count.