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A cold body uses more energy to keep itself warm than a warm body.

When we are cold, we shiver — the muscles involuntary contract to generate warmth. The body may also activate "brown fat", a kind of fat tissue whose primary function is heat production. Brown fat burns calories to generate ...

Cold weather does not adversely affect the battery, and actually makes it perform well. Exposure to hot weather for prolonged periods is what reduces battery life.

The phone may feel slightly slower in cold weather, and it is nothing to worry about.

Just keep in mind ...

Taking three 15-minute sauna sessions can significantly improve your innate immune system. The heat from the sauna stimulates the body's immune response, enhancing the activity of white blood cells and increasing production of heat shock proteins, which play a crucial rol...