Person weighing 130 pounds would need to take in at least 1,300 calories (130 x 10 = 1,300) every day, just to meet their body’s basic needs.A person weighing 200 pounds would need to take in at least 2,000 calories (200 x 10 = 2,000).After you figure out your most basic caloric need, you can factor in your activity level and digestion needs.1.Take your body weight in pounds and multiply this by 10. Example: 130 pounds x 10 calories/pound = 1,300 calories2.To factor in the amount of activity you do in a regular day, take the number you just calculated and multiply it by your Activity Level:Example: 1,300 calories x .30 = 390 calories3.Add together your BMR and calories burned by your activity level:Example: 1,300 calories + 390 calories = 1,6904.Add in calories used during digestion – typically 10% for general population:Example: 1,690 calories + 169 calories (1,690*.10) = 1,8591,859 calories are burned on average for a 130 lbs person every day for basic needs.Activity LevelCalcDescriptionSedentary20%Sitting most of the dayLightly Active30%Walking here and there; daily choresModerately Active40%Constantly moving around; daily exerciseVery Active50%Heavy exercise for prolonged periods of time, such as training for a sport
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What humans actually need – the basicsDescription and commentsThe calculations of calorie requirements are based on the Harris Benedictformula who published his results more than 85 years ago. The formula goes like this: For women: BMR = 655 + ( 9.6 x weight in pounds ) + ( 1.7 x height in inches ) - ( 4.7 x age in years ) x Activity levelFor men: BMR = 66 + ( 13.7 x weight in pounds ) + ( 5 x height in inches ) - ( 6.8 x age in year ) x Activity level The Activity level is based on the amount of exercise you get, and varies from 1.2 to 1.8 or perhaps as high as 2.0, depending on what source you look at. From a statistical point of view, there are a lot of problems with this formula. Too many significant digits. Multiplying your height in inches by 1.7, instead of, say, 2, is a little silly when you can't measure your height to within more than half an inch or so. The significant digit problem is much worse when you consider that the Activity level is a rough guess at best, and affects the result much more strongly than any of the other variables. For example, changing your age by 10 years only changes the calorie requirement by 68 calories, while changing your Activity level estimate from 1.2 to 1.4 causes about a 300 calorie change. The formula makes no allowance for differences in metabolism between one person and another, or even from one time to another for the same person. So, 'estimate'is an important word to remember here. The charts were drawn for a 40 year old person of average height (5'9" for men, 5'4" for women).
What humans actually need – the basicsSo, for a 30-year-old woman weighing 130 pounds (59.09 kg) and standing 5’6” tall (167.64 cm), her BMR, using the Harris-Benedict Equation, would be: 655 + (9.6 x 59.09) + (1.7 x 167.64) - (4.7 x 30) = 1,366 calories You will notice that this number, 1,366 calories, is very close to the number we
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