The amount of discomfort TSW causes can make it impossible to exercise. Do not beat yourself up about this, it is important that you rest as much as possible in order to recover.
It may be the case that you hardly move for weeks and months on end as TSW causes you too much discomfort.
However it is important to keep moving to prevent muscle wastage and help your lymphatic system. This is key for skin recovery – many report that exercise which stimulates the lymphatic system has helped their skin recover quicker. A popular form of exercise for TSW sufferers which doesn’t put too much strain on the skin is trampolining. You can get a mini one which can be used in the house!