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Warmth in mammals (like humans) is achievable through homeostasis, a process which ensures the maintenance of a constant and stable internal environment for the organism to survive. Thus, when we feel cold, our body automatically undergoes the following changes:

1) Contraction of erector hair muscles

2) Constriction of skin arterioles

3) Dilation of shunt vessels

4) Increased metabolism rate

5) Decreased sweat production

6) Shivering

Refer to any Biology textbook for more information.

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14y ago

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