One ejaculation equals 14 pounds of food

This may interest you...
According to Ayurveda, from the digested food chyle is formed. Out of chyle comes blood. Out of blood comes flesh. Out of flesh comes fat. Out of fat comes bone. Out of bone comes marrow. Out of marrow comes semen. Conversion of Dhatuat every step takes a period of five days. Thus semen is the last Dhatu that is formed out of food. It takes approximately 30 days and 4 hours to complete this cycle. Scientists believe that an intake of 32 kgs. Of food produces 800 Gms. of blood, which in turn forms only 20 Gms. of semen.
Assuming that an ordinary man consumes 32 kgs. Of food in 40 days, yielding 800 Gms. of blood, which in turn will yield only 20 Gms. of semen over a period of one month. A person will be able to accumulate about 15 Gms. of semen in 30 days. And one-month accumulation of semen is discharged in one sexual intercourse..
Taken from The book of yoga celibacy, page 144.

 

What doesn't kill you, makes you stronger, right?

 

Ramakrishna said: "The loss of reproductive elements dissipates a person’s strength. But there is no harm in nocturnal emission. That reproductive element is from food. After nocturnal emission, man retains enough to succeed. But he must not lose it voluntarily. What remains after nocturnal emission is very refined. The Lahas stored pots of molasses with holes in the bottom. After a year it was found that the molasses had turned into crystals, like sugar candy. Whatever liquid there was had come out through the holes."
So maybe he was also pointing out that the Jing can be lost only trough masturbation or sex?

 

I don't know much about Chinese medicine, but there's something similar called Ojas.
"Ojas is a Sanskrit term meaning "vigor," and it is best understood as essential energy for the body and mind. It not only gives tissues strength and endurance, but it protects the health and vitality of cells, thereby influencing all bodily functions and physiological processes.
The seat of ojas within the body is said to be the heart, and it is composed primarily of water and earth elements. Ojas can be increased, repaired and protected by eating pure and nourishing (sattvic) foods, practicing meditation and developing a balanced lifestyle.
Within yoga, heart-opening and restful asana can help to fortify and increase ojas."

"In Raja Yoga, Swami explains that through brahmacharya sex energy is converted into a higher form of psychic energy called ‘ojas.’(Ojas, literally meaning the ‘illuminating’ or ‘bright’ is the highest form of energy in the human body. In the spiritual aspirant who constantly practises continence and purity, other forms of energy are transmuted into ojas and stored in the brain, expressing as spiritual and intellectual power). He says, “The yogis say that part of the human energy which is expressed as sex energy, in sexual thought, when checked and controlled easily becomes changed into ojas, and as the Muladhara (lowest of the six centers of consciousness) guides these, the yogi pays particular attention to that centre. He tries to take up all his sexual energy and convert it into ojas."

and some nice quote
"What is the world but a combination of stomach and sex? Look at millions of men and women – that is what they are living for. Take these away from them and they will find their life empty, meaningless, and intolerable. Such are we. And such is our mind; it is continually hankering for ways and means to satisfy the hunger of the stomach and sex. All the time this is going on. There is also endless suffering; these desires of the body bring only momentary satisfaction and endless suffering. It is like drinking a cup of which the surface layer is nectar, while underneath all is poison. But we still hanker for all these things. What can be done? Renunciation of the senses and desires is the only way out of this misery."

 

I don't know which conception came first, but for example Feng shui (chinese geomancy) is somewhat younger (4000 B.C.) than Vastu (Hindu geomancy):
"The originator of all these ancient sciences is one known as Mayasura of the same tribe that constructed the mayasabha of Mahabharata. But the period is that of Ramayana some 16,000 years ago. (...) He was master in many subjects. Some of these are: Vastu Shastra, Jyotirganita-Surya Siddhanta, Aintiram, ... cartography, fundamental physics, the Brahma principle, the yogashastra etc."
At the same time this Ying-Yang thing probably originated in Himalayan regions, which are common to both traditions.
Ojas is considered the most subtle energy man can possess but it's not that easy since seclusion or any other kind of continence or abstinction make it harder to control as the flames goes up and the mind is hardly stable.
Maybe Jing is just our battery power, like electricity, merging from the heart, searching a way to flow. You can lose it by talking, walking or any other kind of activity and the sex drains it most quickly.

 

It's not the same thing. Nocturnal emission doesn't hit your brain that hard with all this dopamine cocktail. You can still function normally after that but when you reach orgasm manually your brain gets this foggy state, you lose memory, it's harder to concenrate, name it.

 

I've said before that ojas is stored in the brain, so naturally when you reach orgasm trough masturbation, you lose this subtle energy, unlike wet dreams which don't do such charm. At least I've personally felt this way many times.