Finding Rest On The Hooghli River, India

Today, we are using waves to help you fall asleep faster and improve your sleep quality. How does it work with the delta and theta waves? You may have heard or even tried it as a kid in school that if you want to make a guitar string vibrate without touching it, what you do is play the same tone with a tuning fork, for example. The frequency from the tuning fork will make the guitar string vibrate.