I've tried changing from stomach to side sleeping for probably the last 5 years and have completely failed. I have resorted to the "rotisserie chicken" method where I have to turn every which way multiple times all night to get sleep.

Depends on your back. I’m a back sleeper with back pain and my physical therapist told me to start stomach sleeping. It helps a lot.

I had a cold last week, and started going to sleep on my stomach because I was able to get more comfortable and relaxed.