On the flip side, you can’t outrun a bad diet, so at a certain point you can’t scale the fries and stay healthy while you could conceivably be doing thousands of pushups eventually.

I think at that point though you run into the reality that injury and aging would eventually affect your pushup capability, possibly even make it impossible with a serious accident, but the injuries that make you incapable of eating fries in some form are more limited and serious.

Fries are ironically the safer bet in most circumstances even if pushups might have a potentially higher income.