There's still a chance I'll go to the gym.
If, by chance, it is
meant as "zero percent."
Regrets? Yeah, sure. I could have been productive those 4 hours I was up in the middle of the night. I could have just forced myself back asleep and got up at 5:30 as usual.
But what's done is done. Can't do anything about "lost time." Time to move on.