Why does a human body shiver?

Answer 1

People shiver when they get cold, but you knew that I'm sure. The reason they do that is that the muscles are really pretty bad at using their energy (from food) into what they are good for (movement). A lot of that energy isn't used for moving your body, instead it is let go as heat. That is why you get really hot when you go running. You are moving around a lot, your muscles let off a lot of heat, and you get hot.

When you are cold however, you body is very smart and uses this mistake to its advantage. So here is what happens:

A part of your brain, called the hypothalamus, gets cold. It doesn't have to get very cold, just a little bit will be enough.
This part of your brain then makes your muscles shake. This way your muscles are moving, but you aren't running around. It works well.
This muscle shaking (shivering) makes a LOT of heat, can be as much as 3x as without shivering. If it is really cold, you won't be able to stop the shivering until you get inside and warm.
This warms you up, and your hypothalamus. After a while you stop shivering.
Of course if you stay in the cold, shivering may not give enough heat. In this case, your body temperature continues to drop which is very very dangerous. This is called hypothermia as is very bad and people have died of it.

Answer 2

Your body shivers because ur tempreture has fallen below 37.5 deg C. Your body shivers to keep warm. Shivering uses energy which in turn releases heat.

Answer 3

Shivering is a response to an environmental stress (i.e. coldness). Shivering is a process whereby you're muscles contract. This generates heat, thereby warming you're body. When your body gets cold, you're blood vessels constrict and you're blood moves away from the surface (so as not to release heat - the opposite happens when you are overheated). In extreme conditions, blood moves from you're extrmeties (hands and feet) and pools around you're internal organs. This makes sense in a survival sense: one needs his or her internal organs to stay alive.

Answer 4

Shivering is the body's way of increasing the rate of respiration in order to warm up the body. Respiration is the way the body 'burns' chemicals from our food to release the energy from it so that we can do things. A by-product of respiration is heat so the body shivers (makes the muscles rapdily contract and relax), to increase the rate of respiration , to produce more heat, to warm us up.

Answer 5

Yeah, shivering or even when your teeth chatter is a sign that your body is reacting to keep you moving and therefore keep you warm. It's kind of a defense mechanism your body has against cold.

Answer 6

the human body shivers in an attempt to warm itself. the muscles moving in that way keep your core organs safe in case of hypothermia.

Answer 7

It is a physiological response to cold. As your muscles contract, they generate heat. The body has evolved to take advantage of this fact. When you shiver, up to ninety percent of your voluntary (skeletal) muscles contract and relax dozens of time per second, generating heat that is meant to warm your body up!

Answer 8

Shivering is an involuntary motion of the muscles to generate heat.

Answer 9

when the core temp. of your body gets to a certain degree, you start to shiver, which is your muscles pulsing to create heat to keep your core warm... it's when you stop shivering that you have a problem, because your body is no longer working to keep itself warm

Answer 10

Shivering also called rigors or shuddering.it happens in the response of hypothermia (a condition of body having low temperature).when there is cold our body sensors (reflexes) triggered to order homoeostasis (a process to make body in equilibrium). TO READ MORE CLICK THIS LINK DONT FORGET TO RATE AND SHRE THIS ARTICLE.