Regular aerobic exercise may prove beneficial to individuals who suffer from insomnia, according to a study conducted at Northwestern University.

Over the course of 16 weeks, researchers observed 23 individuals aged 55 years and older who had been diagnosed with symptoms of the sleeping disorder, including abnormal sleep patterns and the inability to function properly during the day. The team had participants follow two different exercise regimens and then compared results to a control group.

The researchers discovered that individuals in both exercise groups experienced better sleeping at night and less daytime drowsiness. The regular physical activity also improved symptoms of depression and were able to complete daily responsibilities.

“Around middle age, sleep begins to change dramatically, and it is essential that we identify behavioral ways to improve sleep,” said Phyllis Zee, lead author of the study. She added that “now we have promising results showing aerobic exercise is a simple strategy to help people sleep better and feel more vigorous.”

According to the Centers for Disease Control and Prevention, each year, approximately 70 million Americans have been diagnosed with sleeping disorders or suffer from irregular sleep patterns.