Whether you should sleep on your right or left side depends on which health issues you face. In these cases sleeping on the left side increases blood flow to the fetus. Best Sleeping Position Ultimate Guide To Sleeping Positions Healthy Sleeping Positions Best Sleep Positions Good Sleep The left side may provide more benefits particularly for those who are pregnant or experience gastroesophageal reflux disease GERD. . Sleeping on the left side places pressure on the heart while the right side adds no such pressure. According to researchers left-side sleeping encourages better digestion and lymphatic drainage boosts brainpower and reduces snoring. Which Side Is Best to Sleep On. Still either side can offer benefits in terms of. Log Positions If you lay on your side with both arms on the side close to your body then you are a log sleeper. Many people believe that sleeping on the left side is the best option for digestion.