A major guideline for healthy people is to limit calorie intakes and obtain more and varied selections of?

Burning calories is what supplies your body with energy, so they are certainly necesary.An average person requires a 2,000 calorie diet.Too few calories can lead to health problems, such as loss of...

There is a higher metabolic rate found in healthier person than sickly one.

That depends on the individual. It also depends on your goal (whether you want to maintain, lose, or gain weight). Based on if you wanted to maintain, you'd probably need to eat around 2,000 per day,...

takes more energy to move a larger mass

chicken is more healthy, but it depends on how its cooked. fried no is not more healthy but baked yes