Hi Mich,Sorry you have been sick. The immune system suffers dreadfully with BC treatments. I got shingles!!!! Yuk!!! Anyway, a little bit of exercise will actually help relieve your fatigue. The brain itself like to move... and 'wakes up' in respose to movement. True. If you have lymphoedema you must exercise in the cool of the day. Avoid ovrheating as it overloads the system. Walking is cheap and reasonably safe if you cannot get to the local pool. I reckon the beach would be a bit chilly for me. I'm lucky that our local pool is 25 deg all year around.... and not too crowded. Some of my friends really like doing Taichi, but that's too slow for me. Whatever you do, make sure it is fun or in some way enjoyable..... :).