1. Walking ten thousand steps is equivalent to consuming 240-300 kilocalories. The total daily calorie intake of human body is about 1800-2000 kcal, which is equivalent to 1/7 of the intake. It has a good effect on some people who lose weight.

2. Heat refers to the energy transferred by the temperature difference between the thermal system and the outside world. Heat is a process quantity, so heat can only be said to be "absorbed" and "released". You can't say "contain" or "have". This transfer process is called heat exchange or heat transfer. The unit of heat is joule (j). All life activities of human body need energy, such as synthetic reaction of substance metabolism, muscle contraction, gland secretion and so on. And these energies mainly come from food.

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