Can Pupils Indicate How Light Exercise Impacts Your Brain?

Light-intensity exercise leads to notable changes in your brain that affect your cognitive function.

STORY AT-A-GLANCE

• The eyes’ pupils dilate in response to very light-intensity exercise, and the dilation provides a window into the activity’s influence on your brain health

• Gentle exercise positively influences executive function, possibly by influencing activity in your brain’s prefrontal cortex, an area involved in problem solving, decision making, sel…