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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If you owned a smooth and suave performance coupe, an Infiniti G37, for example, would you grow bored after awhile because it simply didn't get the adrenaline pumping?

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His character Oscar Hopkins, he notes, is consumed by the adrenaline-pumping risk of gambling.

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He later said that his adrenaline was pumping almost as it would have with Tina in danger in a real war.

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Adrenaline starts pumping, the breath shortens depriving the brain of oxygen, and the focus is survival and escape versus success and achievement.

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"The adrenaline was pumping, I'm not going to lie, " Niese said.

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Recalling his Toastmasters' coaching, he approached a later opportunity with a different attitude: "I'm excited, my adrenaline is pumping, " he told himself, visualizing a home run.

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Jack Bauer is having a bad day and that is good news for the faithful followers of Fox's adrenaline-pumping 24, as it returns to American screens for a second run.

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The adrenaline is pumping through my body!

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