By the way, guys.....the sperms which you ejaculate during your
orgasm is usually around 80-90 days old already. For most guys, the
best quality sperms are produced when he ejaculate once every 3
days. Within 3 days, the sperm count may not be enough (bad
volume). Longer than 3 days, some sperms are already aged and dead
(bad quality). So guys....remember to cum once every 3 days, no
matter how. 
Keep your testicles cool (why do you think they're outside your
body?) - at 2 degrees C below your body temperature. So no laptops
on your laps, no sitting down closing your legs for long periods of
time, no hot spas, no sauna, no steam rooms, no long distance
driving, no tight underwears. Watch your nutrition too (Zinc,
Vitamin C, proteins, etc, etc, etc). Smokers need a lot more
Vitamin C per day than non-smokers.
Excessive alcohol, smoking, too much coffee, sicknesses, virus
attacks, stress, etc are all known to affect sperm count/quality
and the production of eggs too.
Whatever it is....remember that whatever you do now will only show
results in 80-90 days, provided you do it right.
Actually, nature has made it not so easy for women to get pregnant.
Out of the millions of sperms released, only one will be the champ.
One of the biggest killers of sperms is the woman's vaginal
secretions....they are actually anti-sperm. This is why there is
IUI (where they use a syringe to inject the sperms deep into the
woman - bypassing all the vaginal 'juices' which would otherwise
kill the sperms on their way in).
