Imagine you are CFO of a company that spends more than it earns every single day. No reserves. No buffers. A little deeper in the red each day. Employees slow down. Quality drops. Eventually, entire departments shut down.
That is exactly what is happening inside your body. Every day. And you do not notice until it is too late.
Neuroscientist Dr. Lisa Feldman Barrett — one of the most cited researchers in the world (Top 0.1%) — has articulated an insight that changes everything we think we know about stress, burnout, and performance:
Your brain’s most important job is not thinking. Not feeling. It is managing a body budget — and most executives are chronically in deficit.
What Is the Body Budget?
Your brain manages a budget. Not made of money, but of glucose, oxygen, salt, hormones, and every nutrient your body needs to function. This budget has three expenditure categories:
First: Vital functions. Heartbeat, breathing, temperature — the minimum to keep you alive.
Second: Repair and growth. Cell regeneration, immune defence, neural wiring — everything that keeps you healthy long-term.
Third: Effort. Work, decisions, learning, uncertainty, social conflict — everything that costs energy beyond survival.
The critical point: This budget is finite. You cannot draw from all three pools indefinitely. When pool three (effort) is chronically overdrawn, your brain cuts from pool two (repair). The immune system slows down. Inflammation rises. Sleep becomes shallow. You become vulnerable.
Sound familiar?
The Hidden Costs of Your Lifestyle
The research delivers numbers that should give you pause:
Social stress within two hours of eating has a metabolic effect equivalent to consuming 104 extra calories. Healthy fats get metabolised like unhealthy fats. Extrapolate over a year: stress at every meal equals nearly five kilograms of weight gain — with identical nutrition.
But it goes far beyond weight. Chronic stress means a permanent drain on your budget. And you know all the symptoms — you just call them something else:
Fatigue that does not disappear after vacation. Concentration problems despite adequate sleep. Irritability over small things. The feeling of having to function but having no reserves left. The third cold this winter.
These are not character flaws. This is not laziness. This is your brain cutting costs because the budget is depleted.
Why Executives Are Especially at Risk
According to Barrett, the three most expensive items for your body budget are: physical movement, learning something new, and sustained uncertainty. The last two describe the daily reality of every leader.
Every board meeting with an open outcome: budget drain. Every strategic decision under time pressure: budget drain. Every difficult employee conversation: budget drain. Every hour in a meeting that could have been an email: budget drain.
Then add the things you believe are recovery but are not: scrolling through social media on the couch in the evening — budget drain (social uncertainty, blue light, dopamine spikes). A glass of wine to wind down — short-term mood regulation, long-term deterioration of your brain’s predictive accuracy and sleep quality.
Most executives we encounter have been running a chronic budget deficit for years. They still function. But they function on reserves. And reserves are finite.
What This Means for You
The good news: If burnout, chronic fatigue, and declining performance are budget problems, they can be solved with budget measures. Not with motivational speeches. Not with another mindfulness workshop. But with a systematic intervention that addresses the three levers:
Reduce expenditure: Identify and eliminate chronic stress sources. Not all of them, but the most expensive ones. The meetings that accomplish nothing. The relationships that only cost. The habits disguised as recovery that are not.
Increase income: Sleep quality, nutrition, movement, social connection with people you trust. These are not wellness tips. These are metabolic deposits into your body budget account.
Build flexibility: Train your nervous system to switch more efficiently between tension and recovery. Not just being able to relax — but deliberately switching between states. This is a skill that can be trained.
The Beginning
Ask yourself tonight: What cost me the most energy today — and was it worth it? Do this for one week. You will be surprised how quickly you identify your biggest budget drains.
Then decide whether you want to keep overdrawing. Or whether it is time to restructure your budget.
Sources & Further Reading
Barrett, L.F. (2017). How Emotions Are Made: The Secret Life of the Brain. Houghton Mifflin Harcourt.
Barrett, L.F. (2020). Seven and a Half Lessons About the Brain. Houghton Mifflin Harcourt.
Kiecolt-Glaser, J.K. et al. (2015). Daily stressor-related negative affect and metabolic responses to high-fat meals. Psychoneuroendocrinology.