Are you in your 50s and dreaming of having a six-pack? Flat abs may seem like an unrealistic fantasy, but according to one expert who has them, it isn’t. Christine Roderick is an “age-positive” fitness trainer who helps “women over 40 transform their body, mind & spirits.” In a new social media post, she reveals the simple habits that have helped her achieve flat abs. “I’m 57, working out less than in years past & still maintain low body fat & an occasional six pack year round. ...