Cut your bought or home grown spring onions about 3cm (1in) above the root. Use the leaves in cooking and add the stem/roots to a glass with clean water to rehydrate roots. Change water daily & keep in a well lit position such as a windowsill or kitchen bench. Watch green leaves regrow.
Basically, a hard thwack to the balls would do the trick.   Also, a man could stop producing sperm because â¦of a hormone imbalance, especially age related.     Men never stop making spermatazoa after the onset of puberty, as long as their testicles remain intact.
Sperm motility. This is the percentage of sperm in a sample that are moving, as well as an assessment of how they move. One hour after ejaculation, at least 32% of sperm should be moving forward in a straight line. Morphology. This is an analysis of the size, shape, and appearance of sperm. Do men stop making sperm when they're older? Men can continue to be fertile throughout life.