People who sleep on their side often find it easier to maintain spinal alignment when using a supportive pillow. Proper support can reduce pressure on the neck, shoulders, and lower back.
Some studies also suggest that side sleeping may support the body's natural waste-clearing processes during sleep. Although more research is needed, these findings have increased interest in how sleeping positions affect long-term health.
The key is finding a position that allows both comfort and quality sleep throughout the night.