Best sleeping postures
Tens of medical studies have proven that sleeping on one's back reduces body oxygeantion and worsens numerous health problems, including asthma, asthma and allergies in wheezing children, back pain in pregnancy, bruxism and swallowing, clenching episodes and gastroesophageal reflux, chronic respiratory insufficiency patients, coughing attacks, GERD (gastroesophageal reflux disease), heart failure patients with central sleep apnea/Cheyne-Stokes (irregular) respiration, irregular or periodic breathing, sleep apnea, sleep paralysis and terrifying hallucinations, snoring, hypopneas and apneas; stroke; tuberculosis (pulmonary) treated by thoracoplasty.
Sleep was and is a poison for the sick and, especially severely sick patients due to highest death rates from 4 to 7 am. Sleeping on one's back is one of the two key leading immediate causes of this mortality and acute episodes (exacerbations) of heart attacks, strokes, seizures, asthma attacks, and many other chronic disorders due to the Morning Hyperventilation Effect (the 2-nd factor is mouth breathing during sleep). If you want to know how to avoid sleeping on your back, find the free manual: "How to Prevent Sleeping on One's Back".
Practical testing (DIY body oxygenation test) have revealed that the best strategy is to avoid sleeping on your back and alternate between 2 sleeping postures: sleeping on your stomach (or chest) and the left side.
However, if you DIY body oxygenation test results are different (this is almost impossible), use those sleeping postures that are best for you.
Other important suggestions include: sleeping on hard surface (for better circulation) and taping mouth at night for those people who have dry mouth in the morning.