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Jun
29
comment Can you recharge without sleeping?
I suggested a very radical rewriting edit in order to remove all "personal health problem" wording and thus have the question qualify for reopening. You don't have to accept it, of course. But I think that with it, your question has a chance of getting open again and gathering more answers.
Jun
29
suggested rejected edit on Can you recharge without sleeping?
Jun
29
comment Why do some medicines induce sleep?
@InfiniteLight I don't see how reducing it to three-four mechanisms will help. "Why are there many medicines which are H1 receptor antagonists" is not a good question, there is no good reason why there are several of them. Also, I wouldn't say that some mechanisms are more "common" than others, common by what count?
Jun
29
comment Why do some medicines induce sleep?
I'm torn between flagging this as way too broad and thinking that it is a good opportunity to clear up basic misconceptions about drugs in an answer. In any case, I recently noticed that a standard book on pharmacology has three separate chapters entitled "how drugs act", this should give you a hint why the question is hard to answer in this state. Note that these were basic overview chapters, before delving into what specific classes of drugs do.
Jun
29
revised Can you recharge without sleeping?
clarified that the lack of sleep studies are in rats, gave more exact info on sources
Jun
29
comment Can you recharge without sleeping?
@Luke I did. Kandell (or rather the chapter author, K. is the editor) says that part about the "kill you sooner". I don't think I can find the exact page because I have the Kindle edition.
Jun
29
answered Can you recharge without sleeping?
Jun
28
comment Are we more attracted to people of the same ethnicity?
There is a good chance that there is a relation mediated by oxytocin, a hormone which influences both romantic attraction and distrust against outgroup members. But I don't know its exact mechanism of action (especially the causal direction of oxytocin release, falling in love, and stranger distrust) to post an answer, so I hope somebody with better understanding will post an answer about that.
Jun
27
comment If a trait would be advantageous to an organism, why hasn't it evolved?
I actually like this answer. This kind of question makes the most sense in a mental model which silently assumes intelligent design of organisms, even if the asker believes in evolution and is unaware of the inconsistency of his knowledge structure. All the other answers explain the points in which evolution behaves unlike intelligent design, but this one also notes which core assumption is responsible for the misunderstanding.
Jun
19
answered What comes out of this bump in this vegetable?
Jun
19
comment How can I keep pond water “alive”?
You want to keep live water indefinitely? I don't know if you'll be able to tell if it gets colonized by Legionella.
Jun
17
awarded  Constituent
Jun
16
comment Do we have evidence of heritable personality traits in chimpanzees?
@WYSIWYG the Big Five are considered to have up to 50% heritability in humans, so I don't see a problem with the premise. I don't know if there is sufficient research on personality traits in apes (or how researchers would deal with the distortion which being lab-reared will introduce to a twin study), but I find the question quite interesting.
Jun
14
comment If eating 100% fat 2 times more worth the energy I spend during the day, will I store body fat?
"is the one that tells the body" sounds like a strange way to say it. The response to food is regulated by many more hormones and neurotransmitters. For example, gut cells secrete GLP-1 in response to both fat and carbohydrates. I don't know all pathways involved but I'd be very surprised if insulin is the only mechanism involved in telling the body to store fat. And then there is the theory that the trouble behind metabolic disorders doesn't come from storing too much fat, but from storing too little fat - the overconsumed but unstored fat would wreak havoc in different tissues.
Jun
13
comment Consequence of Plants as Incomplete Protein Source
You seem to miss that the concept of essential amino acids is human-centric. Why should a plant encode all the amino acids needed by a human? The plant doesn't need them.
Jun
11
comment Is the autonomic nervous system only activated by internal stimuli?
I wonder if the professor meant it on another level: that the autonomic nerve system does not have sensory neurons connected to the outside world. The examples you cite are ultimately caused by external stimuli, but as far as I remember, visual and olfactory perception is not part of the ANS. This is of course a nitpicking distinction and not meant to make your answer look bad (I liked and upvoted it), but for a student who is trying to find their way through complex material, easily delineated distinctions are good signposts, so it could be an explanation for why the prof used the statement.
Jun
10
comment Is hunger pushing cognitive ability in humans?
I think it has a biological answer. I vaguely remember reading somewhere that either leptin or ghrelin (or both) have an effect on cognitive performance. Orexins also regulate wakefulness, so they may be part of it as well, as more wakefulness tends to produce better attention, and lots of cognitive ability depends on focused attention.
Jun
8
awarded  Caucus
Jun
7
revised Are there any culinary fruits that are not botanically fruits or accessory fruits?
added language related argument
Jun
7
revised Are there any culinary fruits that are not botanically fruits or accessory fruits?
added info on petals and leaves, and also western point of view warning.