Does it affect a boy's health if he sleeps on his stomach?

Sleeping on the stomach can have certain negative effects on boys' health.

Sleeping in a prone position may lead to insufficient blood oxygen saturation. This is because lying face down compresses the chest cavity, restricting thoracic movement. As a result, bronchial expansion function may be impaired due to restricted respiratory mechanics, leading to diminished respiratory function and potentially causing chronic respiratory failure or chronic obstructive pulmonary diseases. Additionally, consistently sleeping on the stomach can exert pressure on the cardiovascular system, particularly the coronary arteries of the heart. The external pressure may induce coronary artery spasm or constriction, impairing normal blood supply to the heart muscle.

Therefore, it's important in daily life to avoid sleeping on the stomach to prevent chest compression. It's advisable to maintain a proper sleeping posture to minimize potential harm to the body.