health questions please answer?!


Question: Health questions please answer?
1. why do we sweat when we get nervous
2. whey does your stomach growl when you r hungry
3. why i am tied when i wake up from a nap

Answers:

1.When your brain senses a threat it prepares for "fight or flight," by activating the sympathetic nervous system. This causes things like pupil dialation, heart rate increase, etc. which burns energy. This way your body will have all the energy it needs to either fight or flee.
2. it growls because it's the shifting of matter, acids, and gases--oh, hell, let's be indelicate. Mostly, it's the passage of gas downward through your system. If your stomach is making a lot of noise, you can pretty much bet that before long, you're going to do something that makes the indelicacy of this answer seem rather polite. There's even a medical term for this: borborygmus.
3.Its because of the different stages of sleep, there r 5 and once u hit the third (REM sleep) ur body can sleep the full 8 hours. If u wake up while still in the second stage u r wide awake and ready for anything but if u sleep any longer u find yourself worse than before. The average time to get into REM sleep is 20 min so a nap about that time would help u rather than hurt.
Hope I helped ; )




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