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.
However, you don't want to have sex multiple times in one day (you can it just won't help you get pregnant). Every time you have intercourse and the man ejaculates, his sperm count drops drastically, It takes 24 to 48 hours for his body to make enough sperm the semen to become potent enough to do the job.