Yeah, but has it been 4 hours?

I had to have my sun surgically removed. It was gangrenous.

Sure, anything that's warmer than absolute zero radiates on the electromagnetic spectrum. The hotter something is the stonger the radiation. Since most living things heat up (some through actual self-heating, others through movement and other processes), pretty much every living thing counts as bioluminescent.

Since humans have roughly 37°C core temperature, they mostly glow on the infrared spectrum.

You're a fleshy glow stick.

https://journals.plos.org/plosone/article?id=10.1371%2Fjournal.pone.0006256 https://pubmed.ncbi.nlm.nih.gov/1978506/

It generally takes about half the time you were in a relationship with someone to fully get over them after the relationship ends.

So don't end a 60 year relationship ever.