The best time to work out? It depends. If your goal is simply to stick with your routine, morning is best — experts say exercising in the morning allows you to avoid the distractions and excuses that crop up over the course of the day.
But if you're already a devoted exerciser looking to score a personal record in a local 10k next month, you'll get your best training in after work. That's because your body temperatures gradually rise a few degrees over the course of the day, priming your muscles for action and making your heart and lungs more efficient at pumping blood and oxygen through your body.