I am so sorry I forgot to implement health regen if they've starved for a bit for the published build 😅 If you really wanna fix it you can edit your save file in AppData 😎🤭
Yeah, a lot of the level mechanics were added in the last day so it's pretty buggy, haha. Also didn't have time to explain the story in the game, but if you're curious the lore is on the main game page 😁