20%
I don't know how much but we lose heat as sweat.
When you do exercise, you sweat. This is a mechanism our body uses to get rid of excess heat.
There are a great many things that gain and lose heat. Metals for example gain and lose heat much more quickly than gasses.
Quite a lot, actually.
Body heat escapes from all of your body. It escapes more in places where we sweat more often, such as the armpits and forehead. It escapes when we blush as the blood is closer to the surface of the skin so heat can escape easier.
1 quart each hour
It will lose its magnetic charge.
No, proteins can't absorb or lose heat without changing much in temperature. Water has a high heat capacity, so water can absorb or release a great deal of heat energy without changing much in temperature.
Dolphins, porpoises and whales have a thick layer of fat beneath the skin to insulate them so that they do not lose too much body heat in the water. That's the blubber.
No, they don't hibernate. In cold weather bees cannot leave the hive because if they lose too much body heat they will die. They stay in the hive, cluster together and generate heat by vibrating their wing muscles.
heat escapes from 2 major places, your head and your feet, the padding on your feet trap the heat in your feet, while the hair are your head traps the heat from escaping there
Small feet so it does no gain too much heat (small surface area), big ears to radiate and lose heat, as well as a long tail. It is also fast, so that it does not have its feet spending too much time on the sand and getting burnt.