True, :)
When you get cold and shiver, your muscles contract and relax rapidly to generate heat and warm up your body. This process helps maintain your body temperature.
The answer is "True"
Yes
To get warm. By shivering their muscles, heat is generated
friction
The muscles shivering expel heat as a means of releasing energy thus, warming your body
Yes. And It shivers because it is cold.=) Yes. Any animal can shiver. It's a spasming of the muscles to help keep the body warm. Polar bears have large layers of fat to keep them warm but if they were to reach a temperature cold enough to penetrate the fat they would most likely shiver.
The muscular does keep your body warm because say for instance you where working out. When working out you sweat, to cool you off and shiver to warm you up so your working out working your muscles.
Muscles generate heat as they contract, which helps to maintain body temperature in cold conditions. This heat production, known as thermogenesis, is an important mechanism that allows the body to regulate its temperature and stay warm. Additionally, the increased blood flow to muscles during exercise can also contribute to keeping the body warm.
It's your body reacting to the core temperature dropping. Muscles generate heat when they're used - that's why you sweat when you work out - so by twitching the muscles your body can warm itself.
When you shiver, your body temperature rises as a reflex to generate heat. Shivering is a way for your body to produce heat when it is feeling cold by causing your muscles to rapidly contract, which generates heat as a byproduct of the movement.
the arrector pili muscles contract to stand hairs upright