According to the shamans of Mexico, energy is depleted in everything we do. When we get angry, when we're sad, when we climb mountains, or whatever. Everything costs us energy but there's a different price for all things. Some actions expend more energy than others. They also believe like many eastern philosophies that a LOT of energy is wasted when ejaculated for the semen contains the life force which would initially be the life force of the potential child within the sperm.

These shamans, Taoists, Buddhist, etc choose to either be celibate or use certain techniques to keep their semen in their body when they orgasm. This in turn allows them the necessary energy needed to lucidly dream at night, or dream while awake in order to break their perceptual barriers and train themselves for the afterlife in which they will use their dreaming body to remain conscious after death.

Whether energy is depleted or not when you ejaculate can be easily measured by experience. When you ejaculate, do you feel the same or does your body feel slightly weaker as if a layer of energy around your physical body has been consumed?

If you with go ejaculation for a long period of time (ie. Over 30 days), do you feel it's easier to become lucid or is it the same?

Test the theory out if you desire an answer and come to your own conclusions based upon your experience.