I am on 150mg of Levo and 20mcg of T3. I exercise 6 hrs per week doing various classes at the gym such as body attack, body combat and circuits as well as swimming and regular gym. I am on a calorie controlled diet of 1200 calories. Over the last 4 months I put on 5 pounds and can't shift it. I am feeling very frustrated and disheartened that all my efforts are for nothing! Do others have similar struggles? I booked an appt with my GP to review my meds. I am 47 and perimenapausal. Look forward to your replies.