What Is the Mass Inside a Proton?

Mass is not a measure of the stuff inside of it. It's more like an indicator of how much energy there is inside something. When two corks interact with each other, they are passing a gluon back and forth. So then all this extra mass i've gained the summer of the trulygous energy wh you're saying you could probably turn it into lots of energy for to go for a long, long jogeh. That's really what mass is. It's a massive mass ra rap it isa.