If you get grabbed by the Baby Metroid and then go through the door transition, you get permanently slowed down like this. You can remove this state by saving and restarting, but it's fun to go through the escape like this. My biggest timesave would've been if I didn't take so long to set up the moonfall.
At present, UNHchabo has 309,437 views spread across 682 videos for Super Metroid, with the game making up over 10 days of published video on his channel. This is 53.13% of the total watchable video for Super Metroid on UNHchabo's YouTube channel.