The search for sleep has become a cultural obsession—fueling the rise of an entire industry, reports Forbes.

This consumer category includes much more than prescription and over-the-counter sleep aids. Starting with the introduction of Select Comfort’s Sleep Number bed in the 1980s, the $13 billion mattress industry has innovated to keep consumers from lying awake. Upstarts like Casper and Leesa now tout affordable, high-quality mattresses that can be delivered directly to your door. Even meditation and mindfulness are being promoted as a way to get a good night’s sleep.