health upgrades?

hi! new hunter here, I’ve been eating meals to get max health before a hunt but if I faint, my health basically goes back to the default amount. I’m trying to grind nergigante to get better at the game so I kind of NEED a substantial amount of health otherwise I get one shot. I’m just wondering if there’s another way to get more health? I think I saw armor skins to craft but surely there’s got to be a better way