Results may vary, but side sleeping in general is much better if you suffer from apnea. The tennis ball trick is often suggested. The reason why side sleeping w

Results may vary, but side sleeping in general is much better if you suffer from apnea. The tennis ball trick is often suggested. The reason why side sleeping works better is because when you are sleeping on your back, gravity naturally makes your neck and jaw push down on your throat and this can cause episodes where your breathing stops momentarily. Side sleeping mitigates this by having less weight falling on your throat.