Friday, May 29, 2009

2nd Post



I'm doing the Magazine and Experiment project I'm going to drink energy drink and read what I just put into my body, such as. And see the effects, like a guinea pig.



Caffeine works by blocking the effects of adenosine, a brain chemical involved in sleep. When caffeine blocks it, it causes neurons to fire. Thinking the body is in a emergency the pituitary glands start the body’s crazy response by releasing adrenaline. This hormone makes the heart beat faster and eyes to dilate. It also causes the liver to release extra sugar into the blood stream for energy. These response make you think you’re energized! Energy drinks are okay as long as you drink in moderation. (They are addictive).

Tyson

Wednesday, May 27, 2009

Heart beat


In a resting body the adult heart beats 60-80 times per minute, pumping around 6 litres of blood per minute each beat creates a pressure surge thru the artery network in exercise it beats as much as 150 beats per minute pumping 40 litres of blood every minutes.

Tyson