Goldilocks’ Guide to Running: How Much is “Just Right”

It depends on your goals, of course.  Let’s say your goal is postponing death.  Dr. Lyle J. Dennis says: 

“Taken together these findings show that regular slow to average paced jogging 1 to 3 times per week and from 1-2.5 hours had a very potent reduction in mortality compared to not jogging. There may be a U-shaped curve, however, with no statistical benefit to jogging more frequently and at faster paces.”

Read for details of a study on Copenhagen joggers.