Hiya Lottie, I have trained 3 or more times a week whilst on LT. But I have always worked out, so it was nothing new to me. It's just much, much easier now that I am almost 3st lighter. If u are not used to exercise, then I would take it easy. Personally, I have never had as much energy as I have now and my stmina has improved tenfold! Whatever u decide to do, take it easy and listen to ur body. Also drink extra water to replace the water u loose during exercise.