Trying to get in shape and lose weight? What's the psychology behind getting in shape? Well, first forget the psychobabble. In this episode of The Psych Files podcast I examine two established theories of human motivation - goal setting and expectancy theory. If you've tried the Atkins diet, the south beach diet some other low carb diet plan or even (yikes!) a lemonade diet, then it's time to try something different - get into your head just a little bit and see what's going on in there. Join me for a different perspective on weight loss, exercise and fitness.