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They needed 4000 calories a day. We homo sapiens need 2000. Therefore we are much more efficient.

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12y ago

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How many calories does a teenager need in a day?

Girls (teenage) : need about 1800 to 2200 calories each dayBoys (teenage) : need about 2200 to 2800 calories each dayThe extra calories may be stored as fat. Individuals vary greatly in their ability to metabolize extra calories and/or fat.


How many calories you need each day is based on?

age, gender and activity level


How many calories might a child need each day?

Between 1,500 and 2,000 calories a day, with moderate exersie and a healthy lifestyle.


How many calories does a 16 year old female need a day?

all teenagers 13-19 need approx. 2100 calories each day, with plenty ofexercise to of course!


How many grams of fat if dieting?

You need to have 25 to 35% of your dietary calories from fat. If you are on a 1,200 calorie diet, then you would take in 300 to 420 calories each day.


How many calories does a lady need in a day?

About 2,000 calories or so.


How many calories do you need to loose 1 kg?

you need 7000 calories to lose 1 kg


How many calories does Tom Brady need?

He doesn't need any calories. He has 3 SuperBowl rings.


How many calories do you need to take in daily if your resting energy used is 1300 and your calories burned is 2400?

To lose 2400 calories a day you should do fast walking at least an hour and stepping stair an hour will also be helpful.


How many calories do you need for a 30 year old?

1,600 calories for a woman, 2,000 calories for a man.


How many calories does a 80 year old woman need?

about 600 calories


How much calories do teens need from each food group?

20%