Researchers have discovered a fundamental mechanism that affects the size of the pupil, namely our breathing. The study shows that the pupil is smallest during inhalation and largest during exhalation ...

Researchers at Karolinska Institutet in Sweden have discovered a fundamental mechanism that affects the size of the pupil, namely our breathing. The study, published in The Journal of Physiology, ...

Researchers have discovered a fundamental mechanism that affects pupil size: breathing. The study shows that the pupil is smallest during inhalation and largest during exhalation, which could affect ...

Yawning, a universal reflex, is characterized by a deep inhalation and short exhalation. While often linked to tiredness, its exact cause remains a mystery. Though oxygen deficiency is a common ...