Daily Calorie Requirement

yay, the first post will be about my daily calorie requirement:) its 1741 calories. its calculated based on age, weight, gender, job nature and activity level. I wonder why age makes a difference and whether height would too. Anyway, i tried to find out the age thing by using diff height but kept everything else the same. It turns out that the older you are, the less calories you need. I think it may be based on how active you are, like, if you are older, you hang out less, but that's a huge assumption isnt it? Or maybe its like your metabolism is much higher when you are younger, which means that you burn more calories, so thats why you need to take in more calories:) ok, that makes more sense. Kay, so thats what I learnt today.