The end result is a brain that is much, much more than simply the sum of the nucleotides that encode a few thousand proteins.

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In a statement, Sgt Nightingale said he was "devastated" his SAS service could come to an end, but recognised the brain injury meant he could no longer carry out his normal duties.

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Lilly has another promising brain drug nearing the end of its development as well: Strattera, a non-stimulant treatment for attention-deficit disorder.

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The brain is seen "crying" at the end of the video because its owner can no longer join his friends on a night out, police said.

BBC: Campaign advert

You end up constantly on guard, with your adrenaline pumping to the fight or flight responders in your brain, leaving your best intellectual power untapped and unavailable.

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In the end, the most important thing for executives to remember is this: The sooner you start building a better brain, knowing what biology has dealt you, the more likely you are to lead to your fullest capacity and sustain that leadership over time.

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