Yeah, Healing Tanks. Bit of Frieza Force tech. It's like this pod they toss you into after a big fight and you get really thrown around. The sort of stuff you can't just walk off. Then it gets filled with healing juices, I ain't a scientist, and a couple hours later you pop out fully healed, rested and ready for another go!

Probably about the only decent thing about working for that tiny little bastard.