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, ...

For more than a century, scientists have understood that three factors control pupil size: light, focus distance, and ...

Accessory muscle breathing means using muscles other than those typically used for breathing to take in and expel air. One example is the subclavius — between the collarbone and the top rib — which ...

Breathing comes naturally and easily when our lungs are healthy. However, shortness of breath and difficulty breathing are among the symptoms of COVID-19 that can linger for some patients after ...

Do you find that you struggle to fall asleep at night because your mind is racing? Then you might be suffering from stress and overthinking. But don’t lose hope – there are some simple breathing ...