Because I'm not exactly just the elements that make up my body.
English phrasal verb
make up
To invent or form something.
Examples from real speeches
See how speakers use “make up” naturally, then open the full speech for more context.
You are all here because you are smart and you are brave, and if you add kindness and the ability to change a tire you almost make up the perfect person.
I just have a little quote to say which I made up which is, "Be comfortable in your own shoes," which apparently I'm not, which is really bad.
And this is before I'd made up my mind to go public with, what I was dealing with.
And now to be honest, I had had some trouble making up my mind between Yale and Harvard Law Schools.
And when, Pakistan suddenly jumps a decade ahead of us, we have to try to make up, at least a portion of that.
You will feel that, you know, your knees are, you know, they are made up of water.
Don't worry, I have already had the T-shirts made up, "My kid just graduated from Brown, and all I got was the dude from The Office.