Indeed, Steve. I once wrote about it on my blog
in this post, where I included the experience of a famous man who had an ecstatic spiritual awakening.
Ancient Hindu scripture claims that when one is sexually continent for 12 years, a subtle nerve grows in the nervous system which gives tremendous power of memory.
From an article by Sivananda: "...even a little of self-restraint or a little practice of continence is an ideal 'pick-me-up'. It gives inner strength and peace of mind. It invigorates the mind and nerves. It helps to conserve physical and mental energy. It augments memory, will force, and brain power. It bestows tremendous strength, vigor, and vitality. It renovates the system or constitution, rebuilds the cells and tissues, energizes digestion, and gives power to face the difficulties in the daily battle of life. One who has perfect control over sexual energy attains power unobtainable by another means."
The above article is a little puritanical, but speaks of the same law which ancient seers recognized 5000 years ago, and great men like Napoleon Hill understood and applied.