How you feel about your ability to do work (weightlifting) and your muscles’ ability to grow are two different things. Just because you’re too tired to lift does not mean you can’t grow muscle. This business about feeling tired after ejaculation is true. But it is due to chemical reactions in the body (epinephrine, prolactin, etc.) and not some mystical loss of Chi.
I figure if I sneeze too much my nose will bleed. Let me do an experiment… OK, I just sneezed twenty times in two hours in a house with no humidifier (dry winter air). Sure enough my nose is bleeding. Does this mean my nose will always bleed when I sneeze twenty times? Does it mean everyone’s nose will bleed if they sneeze twenty times? This is the same logic being applied to Marco’s experiment. Just because he went overboard and stressed his dick until it shrank a couple millimeters does not mean masturbation will reduce or even effect everyone’s ability to gain.
I’ve said this before. The penis does shrink after ejaculation. It’s a function of the chemicals released during ejaculation. Just because the tiny smooth muscles within the trabeculae in the penis contract and make the whole penis smaller does not mean that the tissue stretching and growth that occurred during PE is reversed. How could it? Take a new toy balloon. Measure the diameter of the round part. Blow it up as large as it will go without bursting. Let all the air out and even help it compress by squeezing it in your hands. Now measure the diameter of the round part. It’s larger. Why? Because you stretched it out when you blew it up (jelqing) and even though you compressed it (ejaculation) that did not reverse the damage you caused by blowing it up. The same applies to the penis.