Health and Fitness: Wake up and run
February 21, 2014
A common fat-loss strategy used by many fitness enthusiasts and those trying to lose weight is to perform cardiovascular exercise early the morning on an empty stomach. This strategy was popularized by Bill Phillips in his book, "Body for Life." If the body is already low on energy, it has to use fat as energy instead of the carbohydrates sorted by the body. I have implemented this strategy into my own training program in the past, with mixed results.
While this theory sounds great, it doesn't look at the big picture. The body is continually burning or storing energy throughout the day. It is more important to train using exercises that jump-start your metabolism instead of focusing on exercises that try to use more energy in that given time period. For example, a person may run on the treadmill and burn 250 calories on an empty stomach and the majority of those calories would come from body fat. Another person may run on the treadmill and burn 250 calories but because they had a pre-exercise meal most of the calories would come from stored carbohydrates in the body. Either way, 250 calories of energy was used. At the end of the day it makes no difference because the body will store any excess energy as fat. And in turn the body must burn more energy than it takes in to lose body fat. It is the total amount of calories that a person takes in and the total amount they burn that matters. In fact, training on an empty stomach might actually hinder fat loss.
If a person is low on energy it is hard, if not impossible, to train at an elevated intensity. Multiple studies have shown that a pre-exercise meal allows individuals to train more intensely compared to those that exercise on an empty stomach. Training harder and jump starting your metabolism will burn more total calories thought out the day and help reach The American College of Sports Medicine recommendation of 150-250 minutes per week of physical activity for weight loss and the prevention of weight gain. The take-home message is that it is more essential to worry about the amount of energy you burn the 23 hours a day you are not at the gym than to worry about how may calories or what type of energy you are using while in the gym.
What about my personal experience? Well, I never saw any drastic changes by exercising in the morning on an empty stomach; however I did like to wake up and start moving. It put me in a good mood and made me feel better the rest of the day. So, while I don't think working out in the morning on an empty stomach will help burn more fat, if you like to work out in the morning and don't have time to eat or if eating before working out upsets your stomach, go for it. But eating something small 1-2 hours before may be beneficial.
— Kyler Crouse, BS, CSCS, FMS is a personal trainer and strength coach that trains at Sierra Athletic Club and a training center instructor at Barton Memorial Hospital. Kyler specializes in performance enhancement and rehabilitation after injury. Visit http://www.KCstrength.com for more information.
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