I got back into Dragonball in the past few days so here’s a bunch of biology based headcanons for the sayians
-the reason they use incubation pods is because the sayian gestation period is about 12 months
-sayians are much leaner than in the anime, their muscle mass is often much denser. -sayians have hand like feet similar to apes, they also have claw like nails that are semi retractable
-sayians sink like stones due to their muscle density hence why we tend to see them fly out of water rather than actually swim
-sayians manipulate ki much easier than humans since rather than just manipulating their own energy they manipulate their own energy and the energy around them
-for a brief time sayian metabolisms were so fast that they cannibalized the weak (dark I know but it can’t all be sunshine and rainbows) they eventually started cultivating animals and plants that had much MUCH more nutrients
-the reason the sayian metabolism is so fast is cause of their muscle density and general body structure
-the zenkai boosts came from predators on vegeta (what predators? I dunno)
