In other words, the unity of ‘birth+death’ creates and sustains life of every being in this game of Life.
In fact, this principle relates not only to eating, it relates to almost everything what beings do in their life.
Have a look at the next picture where two lines define areas of extremes. Beings remain alive between these two borders. When a being does too little or too much of the mentioned things, the life of their body ends.
When a being does not cross any of the two barriers of extremes, the life of their body continues.
Practically speaking, be aware that anything you do in excess weakens your life. The more things in your life are balanced, the longer you are able to continue living in this world.
There are people who go to extremes in some fields of their life. World sport champions may be good examples. They do achieve extraordinary results, for which they are admired and glorified, but on the other hand, they use up their body more than people who keep balance in sport. Later, their body will show signs of premature wear out.
Everybody has their own capacity which limits them in whatever they do. If you care about your psyche and body, I advice you not to go to extremes. If you want to have a very good result in something, you can achieve it when pushing yourself to not more than 62% of your capacity while exercising that. However, be systematic, keep discipline, exercise regularly, do not give up, pursue till you achieve the desired result.