adrenaline

In no way do any of those facts conclude that bikers run red lights for an adrenaline rush.

I really hope more studies are done about how adrenaline addiction adversely affects behavior of people, particularly in jobs where adrenaline inducing events are common, i.e.

You get over the drowsiness with sheer strength of will and adrenaline, but the fogginess doesn't go away.

Just avoid things that are going to build adrenaline like strenuous exercise or competitive video games.

Physical reflexes and adrenaline responses operate in different ways when someone is perceiving real operations rather than an obvious simulation.

Completing small tasks can give you enough of an adrenaline rush to start the next task.

Some people claim it helps them and the adrenaline rush makes their presentation more energetic.

If I get the adrenaline rush you might be familiar with, I sometimes get up and walk a bit.

When I did actually see a cyclist zinging up from my right, it kind of gave me an adrenaline jolt.

I waited and waited for that adrenaline rush/motivational burst to sporadically come into my life.

There are, unquestionably, those who do enjoy war videos just for the sake of some momentary vicarious adrenaline drip granted them by the suffering portrayed.

It sure was great having my adrenaline spike every half hour or so whenever I heard my mother's footsteps on the stairs.

Unfortunately, this is often trumped by the de facto "adrenaline standard".

Getting adrenaline to kick in with them is something besides the 'lack of empathy' aspect, and I bet such studies would show it is pretty trivial to get adrenaline to kick in even in the most hardened "psychopaths"...

Adrenaline gives you focus and the ability to deal with the situation.