It makes the brain release the chemicals serotonin, dopamine and norepinephrine.

During this time, a woman's brain releases specific hormones that stimulate her ovarian follicle to release an egg.

In response to stressful situations, the brain releases hormones and neurotransmitters (ex.

When animals and humans experience pain, their brains release natural opiates similar to morphine.

Recent studies in neuroscience say that as people fall in love, the brain releases chemicals, including dopamine.

Sometimes in penetrating injuries, the brain releases thromboplastin, which can lead to problems with blood clotting.

We take in a lot more oxygen, our blood pressure rises and our brains release chemicals called endorphins which give us an immediate high.

And scientists have found that if you laugh hard enough, your brain releases endorphins.

Over time, the brain learns to predict when you are going to smoke a cigarette - and releases the "anti-nicotine" chemicals.

The men's brains released pain-suppressing brain chemicals called endorphins.