I am 38 year old Female. Healthy. Physically active - walking, running, road biking, mountain biking, skiing, hot yoga - all regularly. I make sure I get a good, sweaty dose of cardio 3-4 times every week. Problem is: no matter how well I eat (real food, not processed crap, rarely take-out) or how physically active I am, I gain weight. I have gained 20lbs in past 2 years.