The Truth is that you should always eat something before exercising so your body has enough fuel to power through your workout.
We need sugar to exert energy. Your body needs a certain amount of sugar for fuel when training. When that blood sugar is not there, your body will convert your own muscle tissue into energy. A study published in the Strength and Conditioning Journal recently looked at cyclists who ate before they trained versus those who fasted just before they trained. The amount of fat burnt was the exact same for both groups, but those who had trained without eating first had 10 percent of their calorie burn come from protein — including their own muscle mass. Which is countr productive to building a lean beautiful body.
Would you drive a car without petrol? Never charge your iPhone & expect it to work?
If you haven’t eaten anything, your workout won’t be as intense as if you’d fueled up beforehand, not to mention that you’ll likely suffer from low blood sugar, which will make you dizzy and sluggish.
No need to hit McDonalds though; a healthy snack will do the trick. I suggest you eat something 45 minutes to an hour before training — you’ll have more energy and endurance to work harder, burn more calories, and improve your muscle tone. Aim for something with carbohydrates and protein. Here are a few quick, healthy snack ideas: a whey shake, low-fat yogurt with berries, or a banana or apple slices with natural almond butter.
The Bottom Line: You should always eat something before a workout. I’m not suggesting you go crazy. A small, healthy snack consisting of carbohydrates and protein will properly fuel your body for a big workout.