Human vision relies on light. After reflecting off surfaces, light enters into the eyes and travels through the cornea and pupil to produce an image on the retina. The eye is sensitive to a broad ...

Get at least 150 minutes a week of moderate aerobic activity or 75 minutes a week of vigorous aerobic activity or do a combination of both throughout the week. And do strength training exercises at ...

Health officials are always encouraging those of us who can to lace up our walking shoes and go for a stroll. And with good reason. Walking has been linked to a variety of health benefits, including a ...

An international collaboration of researchers developed two new complementary approaches for versatile but precise light intensity measurements in fluorescence imaging systems. Accurate measurements ...

Regardless of the intensity of exercise you prefer, keeping a consistent routine can keep your heart healthy. Klaus Vedfelt/DigitalVision via Getty Images Aerobic exercise like jogging, biking, ...