The key word is live. This does not include complying with the law, maintaining an acceptable American lifestyle, feeling good about yourself as a citizen, feeling good about your financial savvy to plan for the future or any other non-tangible necessity.
Basic survival is very barbaric and brutal. Fortunately. Very few Americans have even had to consider surviving in the most basic conditions. This is different for the majority of humans living today. 50% of the world population lives on less than $2 per day.
Part of the problem with Americans is they tend to live above or at what their income can realistically support, rather then being comfortable below what their income can support.
Building block or stumbling block.... choose.
Do you receive any govt assistance in doing so?
I and many people I know do not pay attention to the govt "food pyramid".
I make/earn what I earn. I live the way I want to within my means.
As far as calories per day diet. Depends on the work you do.
The rest of what I consume is excess. Yes, my income is higher than $730 but I live a luxurious life as do all Americans.