For other uses, see Jack Frost (disambiguation). Jack Frost is the personification of frost, ice, snow, sleet, winter, and freezing cold. He is a variant of Old Man Winter who is held responsible for frosty weather, nipping the nose and toes in such weather, coloring the foliage in autumn, and leaving fern-like patterns on cold windows in winter.
Dear Countin' Cal, Theoretically, about 3500 calories equals one pound of body weight. This means that you'd have to take in 3500 fewer calories than you usually do, over a period of time, to lose one pound. Keep in mind, this is in theory; what happens in the real world can be very different.
Weight loss depends on the balance between calories taken in and calories used up through exercise. A pound of fat is 3,500 calories. Eat 500 calories a day less, and you lose a pound a week. Eat 500 less per day and exercise enough to burn 500, and you lose two pounds a week.