The only benefit of this position is that it can help protect against stomach acid reflux.

If you prefer to sleep in this position and to make it one of the best sleeping positions, we advise you to place a small pillow under the knee area in order to support the spine and reduce your chances of suffering from back pain.

Important factors that affect sleeping position
Before choosing the best and most appropriate sleeping position for you, it is important to consider some important factors that affect the choice of sleeping position, which are as follows:Back and neck pain: Sleeping on your back with a pillow under your knee can help reduce knee pain, or sleeping on your side with a pillow between your legs.
Snoring and sleep apnea: If you suffer from these problems, try sleeping on your side or stomach.
Heartburn and acid reflux: If you suffer from heartburn, sleep on your left side and avoid the right side.