10 Biggest Fitness Mistakes That Are Making You Fat Mistake #2:

Mistake #2: You make a point to exercise first thing in the morning, on an empty stomach, to burn more calories. Research has actually shown that training later in the day can help you burn more calories than working out earlier in the day, since your muscle strength and body temperature peak in the afternoon, meaning you can work out harder with less effort. Plus, you've eaten more, so you typically have more energy. But it's really an individual preference: Just like in college when you might have studied during the day while your roommate went the all-nighter route, some people are morning exercisers and some feel more motivated at night. The key is consistency, so you'll get the best results by choosing whatever time of day you can stick to. If you do go the before-work route, just make sure you have a little something to eat (like a piece of fruit) 30 minutes before your workout. Like a car, your body needs fuel to run efficiently, so when you exercise on an empty stomach, you can't train as hard (or burn as many calories)