genesis

I have stuff to add...
Your resting metabolic rate is the energy you need for your heart to beat, for blood to go to the tissues, for your muscles to contract, you get the picture. For most young adults, the resting metabolic rate is approximately 1.5 calories per minute. Age definitely affects your resting metabolic rate, as I already pointed out, but just because you are getting older doesn't mean you are going to be a fatso . Your diet and activity level impacts your metabolism too. Maybe when you're young you can eat fatty stuff and exercise less and still not be a lard ball, but definitely, if you want to stay "not fat," you'll have to eat healthier and be physically active. In other words, age isn't an excuse to be fat. It just makes it harder to be not fat. I think that's about right...