I've been doing Insanity for about 4 month i thought i wouldnt be able to do it due to having Asthma, how wrong was i, i struggled abit the first few sessions but ive learnt to breath properly and can say i dont need my inhalers hardly at all now, i have lost 3inch on my waist and gone from a size 14 to a 10, i feel so much healthier. Please give Insanity a go like me you might shock yourself and love it.