Why do we get tired and how does sleep fix it? |
- Why do we get tired and how does sleep fix it?
- Why is the man o war jelly fish considered a colony of cells as opposed to one organism?
- Can ADHD affect your memory? Does someone with ADHD’s ability to remember change after they start taking meds?
- Why does cream have a much shorter shelf life than butter?
- Why do antidepressant cause long lasting sexual dysfunction even after discontinuation?
- Do we still not know what causes Sarcoidosis?
- If dinosaurs (which were reptiles) were so large, were amphibians a lot larger as well, some several million years ago?
- Did our brains even change through past 50 000 years?
- What is the molecular/metabolic reason animals die in low temperatures?
- Can a chemical reaction be stopped with enough pressure?
- Do countries with equal paid parental leave have less gender discrimination in hiring and workplace?
| Why do we get tired and how does sleep fix it? Posted: 18 May 2022 06:59 PM PDT There's something that's been bothering me for some months and I can't find the right answer to: Why do we get tired? What is this tiredness actually? When we sleep, my body still works. Heart still pumps, brain still thinks, so how does me being unconscious result in energy in the morning? What makes our body energized after sleep and why can't we do it when we're awake? I find all kinds of answers online, such as scientists conducting an experiment on dogs. One dog was trained until exhaustion, they then took the blood from his body and transferred it to another dog, which instantly felt tired? So that means tiredness lies in the blood? If so, why would sleep fix that? My heart pumps when I'm awake too, my organs work to filter out the toxins out of my body. There's also another reason stating that the body cells must regenerate. But why don't they when we're awake too? What keeps them from doing so? I can't find any specific information on why we're tired online, only tips on how to be more energized and stuff of that sort, so I'm here. Please take this rock off my mind. [link] [comments] |
| Why is the man o war jelly fish considered a colony of cells as opposed to one organism? Posted: 18 May 2022 01:41 PM PDT I'm trying to understand the functional difference between the various zooids in this siphonophore. It seems as though all zooids branch from the same egg (I think? ) so theoretically they should share the same DNA. If they do share the same DNA and essentially differentiate into a few different functions (i.e. gastric or singing) then why are the zooids considered separate organisms and not just specialized cells or organs in one single organism? [link] [comments] |
| Posted: 18 May 2022 05:41 PM PDT |
| Why does cream have a much shorter shelf life than butter? Posted: 18 May 2022 03:19 PM PDT Obviously in the fridge, the plain cream is labelled for about two weeks. Butter is a closely related product, but the unsalted butter slab in my fridge is labelled for 6 months. Not margarine, just plain butter with no additives. [link] [comments] |
| Why do antidepressant cause long lasting sexual dysfunction even after discontinuation? Posted: 18 May 2022 03:09 PM PDT Theres a large amount of evidence in the literature and governament reports of people having long lasting sexual dysfunction after SSRI usage, what could potentially cause this? ejaculatory anhedonia and/or genital numbness which are present in patients who have been treated with an ssri in this issue are not commonly seen in patients with depression/anxiety. (page 5 of link). [link] [comments] |
| Do we still not know what causes Sarcoidosis? Posted: 18 May 2022 10:58 AM PDT |
| Posted: 18 May 2022 10:25 AM PDT |
| Did our brains even change through past 50 000 years? Posted: 18 May 2022 03:55 PM PDT I am not knowledgeable in that field so I cannot confidently say myself, thus the question. It really starts feeling to me like the only two things that we had that let us spin up the civilization and science were our crafty hands and that we have created some means of relaying knowledge between each other. Every generation forward was risen with presence of those(starting with very primitive languages or anything that was before them), able to learn everything their predecessors knew so they could not only use it but also use their lifetime to improve those.(something that couldn't be possible for super intelligent non-social species) I think past few thousands years were too short of a time for any significant [evolutionary] changes to happen, which means as we are now we were back then, having literally the same potential, and whatever we will achieve during next few hundreds or thousands years would also be understandable for any specimen taken from back then but risen now or in future. This brings to me another question: When did the last significant for our brains change happen and just how significant it was for us?(I guess it was something about the social interactions/relations) [link] [comments] |
| What is the molecular/metabolic reason animals die in low temperatures? Posted: 18 May 2022 06:49 PM PDT I get that when water freezes it forms cristals and breakes cells and tissues, that's why plants get frost damage. But animals will die even at above-zero-temperatures, for example humans get into a coma and have a heart attack if body temperature reaches 30°C. Why is that? does it have to do with proteins not functioning correctly? if that's the answer plants should die too at low-but-above-zero temperatures! [link] [comments] |
| Can a chemical reaction be stopped with enough pressure? Posted: 18 May 2022 05:55 PM PDT If an explosion could be contained in in something strong enough it wouldn't have any give and the product of the explosion had nowhere to go, would it just become extremely pressurized with the reaction still having taken place, or would the container never be able to be strong enough, or would the reaction find some point where it just couldn't be sustained and fizzle out? Or some other result. [link] [comments] |
| Do countries with equal paid parental leave have less gender discrimination in hiring and workplace? Posted: 18 May 2022 03:39 PM PDT I know some companies refrain to hire young women because they have a lot of chance of getting pregnant and being on maternal leave [link] [comments] |
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