Your body's main source of energy is the carbohydrates which you get from eating your daily meals. As you sleep at night for 6-8 hours your body burns up all those carbohydrates as energy for various metabolic functions that go on even while you sleep. So when you wake up in the morning your body doesn't have any carbohydrates as energy to use as it’s already been consumed by then and it seeks another source to gain energy instead so it starts ...
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