One of the greatest misunderstandings people have about the brain is their belief in “free energy”.

Hundreds of millions of students and workers all over the world consume drinks and pills in the hopes of magically relieving fatigue and boosting their energy levels without suffering any downside. Hence the popularity of Red Bull, Monster, Mountain Dew, Coke, Pepsi, energy pills, caffeine pills, amphetamines, cocaine, and of course coffee.

I’m a firm believer that when it comes to brain circuitry and energy metabolism, Newton’s Third Law still holds: Every action has an equal an opposite reaction.

Based on my years of studying the brain and expertise as a neurologist, I am deeply convinced that, on a fundamental level, the consequences of a chemical energizer are twofold:

• As high up as the drug brings you, you will afterwards sink to an equally commensurate low
• Pushing neural circuits into overdrive stresses the hardware, and leads to cumulative wear-and-tear type brain damage

In life, there are always tradeoffs, and everything has a benefit and a risk. Surely, there are times when it is worthwhile to consume a chemical energizer. The important point is to realize there is a downside to taking it, and therefore only use the minimal amount needed to get the job done.

Taking a large dose initially doesn’t mean the beneficial effect will last longer. It just means your handgun gun just magically became a nuclear bunker buster.

Back in college, I never thought twice about downing an oversize vanilla cappuccino to help get in the studying mood. In actuality, all that was probably needed was a few sips at the start and maybe another couple sips an hour or two later.

Just because Monster Energy shoves 16 ounces of caffeinated sugar into a can doesn’t mean you need to drink all of it.

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