Ok what big task are you trying to avoid today?

And that's why I usually cook while doing the dishes.

I call it "wirbling" and imagine myself as the Tasmanian Devil from the Looney Tunes cartoons when I blitz through the house doing all the chores. Once the momentum has been built it's much easier to keep going, even on stuff I've been putting off.

You wanna know how I got these depressies?

Yeah. I need to finish what I started or I'm going to lose all motivation and lay in bed all day instead

Which makes it easier to keep up the momentum

the removal of the word cleaning is pretty significant imo. it certainly happens this way for me for way more than just chores

Animals sleeping is a pretty big science. Humans are the outliers on this, because we almost shut everything down while sleeping whereas most animals only shut down partially, and/or for much briefer periods. Our sleeping routine is very much based on being in a group, where someone would keep an eye out while others sleep.

Dolphins sleep with one part of the brain at a time. Some birds do the same, but if they're in a group, the innermost individuals can sleep fully, while the outermost keep one eye open away from the group.

As for sharks, yes, they do require a constant flow of water through their gills to breathe even when sleeping. Either they keep moving or they die, or as one shark was found to do: sleeping against a current.