I am a woman obsessed with workout, since I was in my 20's. Now in my early 40's, In a week I do the following training under an instructor as part of a group training at my gym. 6 hours weight training, 3 hours body balance, 1.5 hours air punch combat, 1 hour fit boxing, 1.5 hours RPM, 2 hours Zumba, 1 hour pilates, 1 hour body step, 2 hours Yoga and 3 hours cross fit training. I weigh 50kg and am 155cms tall. I have toned arms and legs and my weight justs floats around 49 to 51kg. I have a lot of energy, takes a lot to exhaust me and I also dance in weekends for over 3 hours Saturday and Sunday nights. I train before and after work. Would this training be harmful or beneficial in the long run? I just enjoy my workouts to the full.