There are actually since love is a chemical release like all emotion. But on topic.
Audio memory is crap. If you want to do this burn in test, take notes detailing what you hear.
To save you some time. Orthos aren't rigid dynamic speaker drivers, they don't loosen up like the cone of a speaker. The pads get somewhat more pliable but not off the head. Even in electronics, burn in, is really just coming up to temp. So while electronics benefit from being on long enough to come up to temp, headphones aren't affected by in use time. Which is good because if either could change significantly over such a short period of time, they'd be completely wrecked within months ;)
To be fair, I used to burn in headphones when I was more of a speaker guy. Electronics I never turn off so you could say I burn them in but it's about keeping them stable not cycling devices to condition them.