Found randomly on the net :
"There is a very powerful way to upregulate your dopamine receptor density, among other things, and it involves abstaining from sexual behaviours of any kind. Particularly self-pleasure and pornography watching.
Fasting is another way. Any prolonged reduction of dopamine release will cause receptor upregulation and thus higher sensitivity to dopamine.
This is an incredibly effective way to boost motivation, sensitivity to life, and general alertness."
Any comment ?