One should get all three macronutrients in their diet(protein, carb, fats)get 30% of calories from protein60% of calories from complex carbohydrates10% of calories from essential fats.
Depends on how tall you are and how active you are. It differs for everyone.
It depends of many factors, both for teens and adults. It is related to their habits, hereditary, size, if they are sedentary fellows or hardy workers.... and don't forget that teens go from thirteen to nineteen.
2100 - 4000
40% of male teens cheat.
67%
90%
63% of teens can drive a stick shift.
Only 30% of teens work in the us
20%
a lot
103.75%