Did you know that the brain makes up only about 2% of our body weight, yet consumes roughly 20% of the body’s total energy?
Entrepreneur and researcher Lado Okhotnikov points out that this remarkable fact illustrates more than biology — it’s a metaphor for life itself: how we spend our energy, and where we choose to focus it, determines whether we feel drained or fulfilled.
When we speak about energy in biological terms, we can roughly think of it as the result of three systems working together.
The first is nutrition. The body breaks down the substances we receive from food and converts them into energy that allows our cells to function.
The second is the hormonal system, which regulates metabolism and determines the pace of processes in the body.
And finally, there is the nervous system, whose state largely reflects the rhythm in which we live: whether we exist in a constant mode of tension, or maintain a state of inner balance.
And this brings us back to the brain.
Despite its modest size, it remains the most energy-consuming organ in the body. But what matters is not only the fact that the brain requires so much energy — what matters even more is how that energy is used.
Have you ever noticed something curious in your own life? Sometimes a day passes rather quietly. You have not done anything particularly difficult, yet by evening you feel completely exhausted, almost drained of strength.
And at other times the opposite happens. A day may be intense and full — meetings, conversations, decisions, movement. Yet by the evening you feel something very different: not exhaustion, but a strange sense of inner fullness, as if the energy has not disappeared at all, but somehow increased.
From the perspective of physics this may seem paradoxical. During such a day we objectively expend far more energy.
So why do we sometimes feel energized — and at other times lose our strength, even when we do much less?
We often explain the loss of energy as a result of overload, lack of time, or simply too many tasks. But quite often the cause lies deeper.
The exhaustion frequently appears when we spend a long time moving in a direction that does not correspond to our inner nature.
When we engage in work that is not truly ours, when we live a life that does not feel authentic, or when we constantly move against our own values, the brain and the nervous system enter a state of persistent internal resistance.
One of the most common signs of this internal conflict is something we often call procrastination. We tend to interpret it as laziness or a lack of discipline. But very often procrastination is not a character flaw — it is a signal. A signal that somewhere along the way we may have begun moving in a direction that does not genuinely engage us.
From a biological perspective this means one thing: a significant portion of our energy is no longer directed toward creation or growth, but toward maintaining tension.
The brain, which already consumes around twenty percent of the body’s energy, must then spend even more resources processing stress, doubt, and internal conflict.
That is why a person may sometimes work less yet feel far more exhausted. Energy is no longer used to move forward — it is spent fighting the very direction in which one is trying to force oneself to go.
So what can we do to maintain a high level of life energy?
Part of the answer is quite obvious. Take care of the fundamentals: eat well, sleep well, and do not neglect physical activity.
But there is also a deeper level.
From time to time it is useful to pause and ask yourself a few simple questions.
Does what I do have meaning for me?
Does it correspond to my inner values?
Does it give me a sense of moving forward — or does it slowly drain my strength?
In such moments it takes courage to be honest with ourselves and gradually remove from our lives what exhausts us — and to move toward what strengthens us instead.
Because in the end, perhaps this is what the search for happiness is really about: learning to live in a way that resonates with our own nature.
This article was written in cooperation with Lado Okhotnikov