This current study examined the effect of a 3-week period of sexual abstinence on the neuroendocrine response to masturbation-induced orgasm. Hormonal and cardiovascular parameters were examined in ten healthy adult men during sexual arousal [induced by viewing pornographic videos] and masturbation-induced orgasm. Blood was drawn continuously and cardiovascular parameters were constantly monitored. This procedure was conducted for each participant twice, both before and after a 3-week period of sexual abstinence. Plasma was subsequently analyzed for concentrations of adrenaline, noradrenaline, cortisol, prolactin, luteinizing hormone, and testosterone concentrations. Orgasm increased blood pressure, heart rate, plasma catecholamines and prolactin. These effects were observed both before and after sexual abstinence. In contrast, although plasma testosterone was unaltered by orgasm, higher testosterone concentrations were observed following the period of abstinence. These data demonstrate that acute abstinence does not change the neuroendocrine response to orgasm but does produce elevated levels of testosterone [pre-study: ~3.8 ng/ml; post-abstinence: ~4.5 ng/ml] in males.
Exton et al. 2001 World Journal of Urology. 19, 377-382.
It makes sense from a biological point of view. If you are not having sex or ejaculating, you are not procreating and furthering the species. This is bad from a survival of the species point of view. The way your genes react to this situation is to increase the sex drive in order to force you to procreate. This is done by increasing hormone and neurotransitter levels to affect sex drive. Testosterone is one of the primary substances that cause sex drive.

i believe i am owned

i really did read a study on what i stated though, i swear. in fact i'm sure i kept it.
maybe it was sperm that reduces if you do not have sex once a week
