Homeostasis, from the Greek words for "same" and "steady," refers to any process that living things use to actively maintain fairly stable conditions necessary for survival.
The definition of homeostasis is to maintain balance of something, so in a living organism, the body is trying to maintain a constant temperature to stay alive. Therefore, when the weather is cold, the body will react and start shivering to create heat, and when it is hot outside, the body will produce sweat, to help the body cool down from overheating.
