does it make a difference how long it's been since last ejaculation? does sperm have to be kept fresh to be fertile?
hi ok as sperm grows inside your testes it just keeps moving through and the old sperm just enters your body its like an on going thing. but masturbating once a week does not hurt this helps us men to keep things moving as you seem to be worried about your sperm freshness as does sex on a regular basis say twice a week. do hope this helps you. good luck