It wasn’t like waterbeds were terrible to sleep in. Waterbed offer similar support to a traditional coil spring mattress, with advantages such as temperature control to make waterbeds really cozy. But that’s where the advantages end. For many, waterbeds were a pain in their back. Waterbeds don’t always conform the same was as an innerspring mattress or a memory foam mattress. Waterbed mattresses also have a lot of motion transfer, as water movement is really pronounced as you move around. It’s like riding a wave, so for a restless sleeper it could disturb their sleep.