Depends on how tall you are, and what you were doing before you went to bed the previous eveing.
Scientists put sensors into the leg bones of baby lambs and confirmed that most growth spurts occurred when the animals were at rest or sleeping - the same is true in humans, and this explains why children get growing pains at night-time. (Their findings appear in the Journal of Pediatric Orthopedics)
Almost no growth occurs when the lambs are standing or moving around - at least 90% of the bone growth occurred when the lambs were asleep or resting.
The researchers believe that when the animal is at rest, pressure on the bones involved with growth - the growth plates - is eased, allowing them to elongate.
Growth plates may be like springs that, during standing and walking, experience compression and tension - when these strains are eased, as when the animal lies down or goes to sleep, they resume growing.
There have been human studies that also document this - Children do have growth spurts at night. The process relies on Collagen is t- a fibrous structural protein that makes up the white fibers (collagenous fibers) of skin, tendon, bone, cartilage, and all other connective tissues. It is also found dispersed in gels of the body to provide stiffening, such as in the vitreous humour of the eye.
Collagen fibers are woven together like pieces of fabric to form a network in which new cells grow and reproduce. Any time the body needs to build new cells, such as in the healing or growing process, collagen plays the central role. Collagen is the substance that protects and supports the softer tissues of the body, and it is what connects them with our skeleton. In other words, collagen is both the material and the glue that holds our body together.
The body's production of collagen slows with aging. I mean, it really slows down. We first notice it on the outside of our bodies when tiny lines and wrinkles start showing up in our thirties. By that time, the lack of collagen production and collagen damage is already affecting the inside of our bodies. The damage gets our attention as strains and sprains become more severe. Things we have always done, like running or jumping, suddenly seem more painful. Injuries that have never proven serious before begin to hurt us. Joint pain becomes more problematic. We are feeling the pains of aging.
Research has shown that much of the body's vital metabolic repair work takes place when we sleep. It has long been known that the body switches gears shortly after we fall asleep. It moves from its normal, active-involvement state to a rebuilding-and-maintenance state. It is during this sleep that the body searches about for available collagen and other important nutrients to convert them into the important materials needed by the body.
Cartilage is a rather firm rubber material that covers the ends of bones in normal joints. The primary function of cartilage is to reduce joint friction and, since cartilage can change shape when compressed, serve as a shock absorber for the bones.
The Skeleton grows in your sleep due to the Cartilage - It can change shape because it is composed of more than seventy percent water, which can be redistributed with compression or movement - with gravity during the normal day. Since cartilage does not contain nerves, you never feel pain when these changes occur. When collagen disease strikes as we age, this shock absorbing quality is reduced. That is why activities like running and jumping feel less comfortable as we age than when we were younger.
Younger people thus have more Cartledge 'springs' to grow back atnight, thus will shrink more in the day, and recover faster at night than older people. In theory, we could shrink and grow eight inches, this is the amount that elderly people lose (or more in height) by the time they have reached seventy-nine. Part of our height is made up of the cartilage between our spinal disks, and if you did a parachute jump- landed hard - then that evening your height would be up to eight inches less. Most normal walking reduces our joints up to about two inches however as teenagers, which reduces down to an 3/4 of an inch by adulthood, 1/4 by old age.
After a good nights sleep, the fluid is replaced, so your height recovers.
2007-02-26 09:56:59
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answer #2
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answered by DAVID C 6
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I heard it was anywhere between 1-5 mm - nothing exciting really... but it disappears over the day...
2007-02-26 09:59:14
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answer #3
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answered by azure 2
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Why are you really short ? Dont worry hunni you shrink when you get older too
2007-02-26 09:54:32
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answer #4
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answered by Anonymous
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