Adding a pickup game or a major outdoor chore to your weekend is fine—unless you’re working out way above your fitness threshold. As you age, you’re getting farther and farther away from the awesome shape you were in back in college. “When you overdo it for a prolonged period of time, you exhaust yourself and put yourself at risk for heart troubles,” says Dr. Steven Masley, author of The 30-Day Heart Tune-Up. “Most men don’t have any idea how fit they are and they try to work out either too easily, or worse, at levels they haven’t sustained for years.”
The Fix: If you’re not 100% sure where your strength and agility lie on the spectrum, take a fitness test (like this seven-part test) to find your optimal workout zone, Masley says. Improve from there, and soon enough, you’ll be able to play D like it’s no big thang.