The best sleeping position depends on your needs, but generally, side sleeping and sleeping on your back can be good choices:

Side sleeping 

This position is often comfortable and can help with snoring, sleep apnea, and acid reflux. Its also recommended during pregnancy, especially in the third trimester. Sleeping on your left side may be better for pregnant women and people with acid reflux, while sleeping on your right side may be better for people with respiratory issues.

Sleeping on your back 

This position can help improve your posture and reduce pressure on your arms and legs. It can also help with sore hips and teeth grinding. However, it can cause snoring and sleep apnea to worsen, and it can trigger heartburn or GERD. Pregnant women should avoid sleeping on their backs during the third trimester.

Sleeping on your stomach 

This position can increase your heart rate and requires more energy to elevate your body. To improve your alignment, you can put a pillow under your stomach or pelvis.