My father asked me to join him for a class at TRXNorCal. As a former college athlete and someone who regularly lifts weights, I thought it would be too easy or not what I was looking for. Wrong! Nan's classes provide me a full body workout, which invariably leaves me sore the next day and feeling stronger the day after that. After a couple of her classes I realized how weak my core was and how much I needed the strength training TRX offer.