September can be a strange month. Summer isn't quite over, but the slower pace of the season may already be gone. Your inbox is fuller. Your calendar is busier. Your workouts are back on schedule. Your social life is picking up. And somehow, you're expected to keep up with all of it while still feeling energized. If you've been feeling more tired than usual lately, it may not be one huge problem. Sometimes it's a collection of small habits that quietly chip away at your energ