Why didn't Jim's hair and beard grow during hibernation?
In Passengers, why didn't Jim's hair and beard growing? Even after we die, beards and nails are supposed to grow?
Best Answer
Hair is made of a protein called keratin and dead cells.
For hair to grow, your body needs to be processing some energy to make it grow.
If the technology to put people in hibernation would exist, then this would like be in a way that stops or severely slows down the body's metabolism (energy processing).
If the metabolism isn't stopped (and since we are in hibernation we can't eat to replenish the energy), we would use up all energy in our body during the hibernation and die.
Because of this, it is to expected that our hair wouldn't (significantly) grow during hibernation.
Now it is a common misconception that our hair and fingernails grow after death.
This is not true.
Instead a persons fingernails and hair may appear longer because the skin around them has retracted.
This is due to dehydration that causes the skin and other soft tissues to shrink.
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Nutrient Deficiencies. Deficiency in vitamins and minerals can result in limited beard growth. Low levels of protein can affect how your body makes testosterone, thereby impacting your facial hair growth.What causes lack of facial hair?
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Typically, full beard growth is possible starting at around age 18, but for many men, that time may not arrive until they're 30. So, if you're not getting the beard growth you want, it may be because it's not your time.Why did my beard stop growing?
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Answer 2
I do not have much idea about hibernation, but according to this article, after death the hair and bear does not grow.
It just looks like it has grown, but actually it is our skin that is disappearing by drying that reveals more of the nails, which in turn makes it look longer.
I suppose hibernation must be doing the same thing since you do not consume any food or water.
Sources: Stack Exchange - This article follows the attribution requirements of Stack Exchange and is licensed under CC BY-SA 3.0.
Images: Erik Mclean, Anna Guerrero, Matheus Bertelli, Ketut Subiyanto