A study found that people who trained more consistently tended to report fewer depressive symptoms.

The best exercise for a person's mental health may simply be the one they will actually keep doing.

Exercise seems to help mood through one set of pathways and improve sleep through another.

If you have ever wondered whether dragging yourself to the gym actually does anything for your mind or your sleep, two studies published within weeks of each other this summer offer an encouraging, and refreshingly practical, answer. Taken together, they suggest that building a consistent exercise habit may pay you two separate dividends: a steadier mood and more restful sleep. And, intriguingly, the mood benefit does not appear to simply be a side effect of sleeping better. They seem to be two distinct gifts from the same habit.

Two studies, one bigger picture

The first study, published July 22, 2026, in the Journal of Clinical Medicine, followed 349 people, mostly young adults, and examined how their physical activity related to both depressive symptoms and sleep quality (Hryniewicz et al., 2026). The researchers measured mood with the Beck Depression Inventory and sleep with the Pittsburgh Sleep Quality Index, then used a statistical technique to tease apart what was driving what.

The second study, published September 1, 2026, in Medicine & Science in Sports & Exercise analyzed data from 702,007 Japanese adults who completed annual health checkups in two consecutive years (Miyagi et al., 2026). This let the researchers see what happened to people's sleep when they started exercising, kept it up, or stopped.

A quick aside: the lead author of that second study shares a surname with cinema's most........

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