When you are shivering. Or when you are unconscious
shivering with cold
of Shiver
with fear
I believe your body is responding to the cold by shivering to warm you up.
Yes, but it's unlikely. A shivering cat just means that.. well, the cat is cold! Older cats with arthritis are prone to shivering.
Moderately cold; cold and raw or damp so as to cause shivering; causing or feeling a disagreeable sensation of cold, or a shivering.
shivering is said to warm your body when cold.
Fever
Shivering is the body's attempt to increase it's core temperature.
Sweating and shivering are examples of thermoregulation, which is the body's way of maintaining its core temperature within a narrow range to stay healthy. Sweating helps cool the body down when it's too hot, while shivering generates heat to warm up the body when it's too cold.
Shivering is an involuntary muscular response from the body, triggered by cold. The "shivering" muscles are trying to internally generate heat, to help keep you warm.