Getting back on the horse

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Ok so before the holidays I was to a point where losing weight was nothing. On my diet and P90x workouts I had lost almost 12 lbs in 3 weeks. As soon as the holidays hit I was not home as often to complete a workout, the food was going in like it was going out of style, and the pounds came back on. Last time I had started using mfp religiously and thats what helped. Well I am tired of missing my workouts and eating junk food so starting tonight I will start my P90x workouts and hopefully get back to losing weight.