Hi cromagnon,
Well ,it seems that these things are more important in day to day life. You have given the standard measures of calories diet and balance. You are saying right according to several standard acts.But One thing most important that it depends on capacity and working schedules as it always vary man to man.Exercise is main thing which is compulsory to all human beings ranging from small capacity to large capacity in take.Well ,you can also search this from search engine and will surely get good information on these topics.
Thanks