In a blog post from a few years ago about the dose-effect of exercise, I passed along the findings that nearly an hour of rigorous exercise, at least three times per week, can be as effective as antidepressant medication.

A newly published study notes that resistance exercise (such as lifting weights) can be useful in reducing depressive symptoms regardless of the intensity, duration or frequency of the workouts.  So, go out and pump some iron to strengthen your resistance from depression!  Even short, infrequent or not very rigorous workouts are helpful.