Most doctors will tell you that exercise is an important part of our daily routine.  But could some exercise be detrimental?

The HealthDay News is reporting that while running can include health benefits like weight loss and stress reduction, it can also go a bit too far.

A numbers of studies have suggested that "moderate" running is best for longevity and that there may be a point of diminishing return.

New study tracks moderate and high runners for effects

The report found some evidence that high-mileage runners have shorter lifespans than their more moderate counterparts.

The best advice for runners is "less is more."  They recommend a total of two or three hours per week to keep a runner happy and healthy.

The report found no evidence on why those who exercise in moderation live longer than those who practice a more hard-core regimen.

Join Jo Anne Paul and Steve Gruber weekdays from 5:30 to 9 AM on 1240 WJIM-AM and the Stations of the Michigan Talk Network