Tag Info

New answers tagged

0

During stress glucocorticoids, which are steroid hormones produced by adrenal glands (such as cortisol and corticosterone), are released into the blood-stream. These hormones have anti-inflammatory effects. You may say that they suppress the immune system. The circadian rhythm, which controls the sleep-wake cycle, also controls glucocorticoid secretion, ...


0

Yes, when you are dreaming, brain activity increases ( called the REM phase because of the effect of the increased neural activity: rapid eye movements ). You can tell this by looking at the EEG, from witch we can state that our brain is more active and therefore is consuming more energy, making the regenerative effect of the sleeping less efficient. ...


4

No, you cannot. Although we don't know how sleep works, we know that lack of sleep is very devastating to the body, and nothing (including laying in bed relaxed but awake) can replace it. If a rat experiences 100% lack of sleep (somebody keeps it awake all the time), this will kill it sooner than 100% lack of food would. There are no wake-until-you-die ...


0

It's possible that they do, depending on the intensity of the dream and the amount of brain activity. For example, if the dreamer is thinking too much or is having a dream that's way too intense, the brain activity goes up and they're not as rested. However, lucid dreaming can be good for sleep if the dreamer creates a more relaxed dream. This can ...



Top 50 recent answers are included