You can earn  money while sleepin in many ways . Like lending your money in a legit site like bitconnect there interest will be calculate based on bitconnect bitcoin price volatility software after predetermined interest rate period ends. You can also try buying mining rig/ant miner s9 this kiner are very profitable but pricy especially in electricity bill you need stable cold temp (range 0-14 degress if im not mistaken ) last is trading (long term ) but its very risky .