The Depressive Theory of Relativity
Time seems to slow the hell down when you're feeling like this. I just looked at the clock, thinking I must have already worked 10 hours today, and it's only 4:13 pm and I've worked 4 hours so far.
Obviously, realizing how out of sync your body is with reality only worsens matters for your head. It's like nature's own little spiral of fuck-you-i-can-always-make-it-worse.
It doesn't feel like an exaggeration to say that time and space both dilate painfully. Reaching 2 feet across a table to grab a piece of paper feels like someone thinks you're made of elastic and is stretching your arm from New York to California. Getting through 5 consecutive minutes of anything feels like someone made you hold your breath under water the whole time.
There's also a particular weight on your chest that is crushing, so maybe the relativity makes sense after all.