The Crystal Gems were all tired in "Chille Tid" from searching the ocean, but Steven was the only one who actually needed to sleep. The rest could have recovered by just going some time without exerting themselves, but they tried sleeping on Steven's suggestion.
edited 3rd May '17 12:08:02 PM by thatother1dude
Hmm... that is a possibility, given that gems presumably need some source of energy and recovery. After all, if it were limitless, gem battles would be eternal until someone was shattered. That said, if sleep (as opposed to general rest or downtime) is truly optional, I kinda wonder why Pearl engages in it - she generally disdains doing things that humans do.
Reminder: Offscreen Villainy does not count towards Complete Monster.While Jasper and Lazuli were passed out after defusing, the CG were also noticeably exhausted...Amethyst being face down.
Rules of the Internet 45. Rule 45 is a lie. Check out my art if you notice.@48905 It's a lot easier to explain why Amethyst mimics human behavior - in general, she enjoys doing it. Presumably, that includes sleep.
For actual energy accumulation... honestly, I always suspected that they were effectively solar-powered or run off of some other ambient, easily gathered energy source. They have a finite amount and would need to recharge, but if nothing is interfering with them, able to keep going more or less indefinitely.
Reminder: Offscreen Villainy does not count towards Complete Monster.I like to think that gems are also able to fuel themselves with ambient heat. Which admittedly would make no sense under the laws of thermodynamics, so that would require enough handwaves that you might as well just say "magic."
Reminder: Offscreen Villainy does not count towards Complete Monster.![]()
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Gems do seem a bit Elvish, magic might not be out of the question for them.
edited 3rd May '17 1:39:18 PM by MorningStar1337
She stole Amethyst's words!
Rules of the Internet 45. Rule 45 is a lie. Check out my art if you notice.I grew it on the GROUND! I'm not a part of your SYSTEM!
Darkness cannot drive out darkness; only light can do that. Hate cannot drive out hate; only love can do that.edited 4th May '17 9:09:39 AM by thatother1dude

Maybe they don't need sleep, per se, not like humans do, but do require some form of rest or downtime nonetheless to keep exhaustion at bay?