According to Wikipedia, the percentage of oxygen in the air is 20.95% at the present moment. In reality, it is much less, especially in heavily populated industrial areas. In some cities it’s 19%, and even 18%.

Very long time ago, Earth atmosphere had 28% oxygen in the air. People naturally lived as long as they wanted and didn’t age much. This high percentage of oxygen in the breathing air used to burn all the toxins in the cells of the body. There is an obvious connection between the percentage of oxygen in the air, toxins, and aging. This is the first main reason people on this planet age.

At present moment, toxins don’t get fully burnt during the metabolic process. They stay in the body and contribute to aging. The problem is, our organs can shut down completely from an overload of toxins. But they don’t, not just yet. Our magnificent body has a built-in intelligence mechanism. This mechanism gets to pick a lesser evil. So in this case, the lesser evil is taking part of the toxins out into the extracellular fluid (ECF) instead of shutting the affected organ down altogether.
Toxins are poisons that invade the ECF. Our body’s intelligence kicks in and retains extra fluids to wash the toxins out, the best it can. Hence, water retention and weight gain.

Fortunately, we can help the body burn toxins naturally, if we abstain from food once a week. Drinking water is okay during this 24-hour fast. While there is no intake of food, the body has the ability to do the necessary maintenance while our system is not busy digesting food. Food digestion takes up to 80% of our body’s energy. When this life-force energy is not wasted on trivial digestion process, our body can hurry up and clean the house. Toxins burn up during the 24-hour fast, and we start looking and feeling younger. Excess fat gets utilized as well, therefore weekly fasts are a natural weight-control mechanism.

The second reason is the built-in biological program we are born with. It includes the following stages: birth, maturity, reproduction, aging and death.
The third reason is the so-called “societal norms”, when we see old people out there who are crippled, achy, frail and tired. Our own subconscious mind compares people’s appearance to their age. It is busy doing that every second of the day. If we think that at 43 one ought to look a certain way, the subconscious will age us to the “appropriate” age, just so that we don’t stray too far from the ”norm”.

When a woman in her early to late thirties starts to experience her first signs of aging, she is very alarmed and concerned. So what is the first thing she does to remedy the situation? You guessed it! She runs to the local skin clinic. She will seek anything, anything at all, like micro-needling, microdermabrasion, peeling, laser treatments, plastic surgery, just to name a few. This woman will do it long enough to address the most conspicuous signs of aging, and when they are not as obvious she will settle down and relax again. And the process repeats itself over and over.

The bad thing is, the poor woman only goes after the physical reasons for aging and is completely oblivious to the fact that the subconscious mind is doing its own thing. One cannot fight the subconscious mind, it is said to be 1000-10000 times more powerful than the conscious mind.
So in this case in spite of all that effort on the person’s behalf to change the signs of aging, her subconscious mind will return her right back to where she started from. And will age her back to the “appropriate” way she “should” look at 43.

If the programs running in the subconscious mind are not deleted or reprogrammed, there is no hope for any change on the outside. Our physicality only follows what the subconscious mind dictates. The above-mentioned process is very similar to this analogy. When one tries to swim against the current, he or she will have a semblance of success, just for a minute. But then tired of fighting the unstoppable natural force, they will give in to the current and go with the flow.
However when you re-route the subconscious mind by changing the software in the computer (your mind), the current will automatically self correct. That’s exactly how it works with the subconscious!