I was the fittest i have ever been before i got sick. I swam and walked long distances regularly, used my exercise bike daily and worked in a really physical job - as a gardener. In my spare time i gardened at home (i was renovating a severely neglected 2 acre garden. Now i cannot do ANY exercise at all - not even walk far. I can walk and don't use a wheelchair, but i can only walk for about 5-10 mins before becoming extremely tired and feel like i will collapse. Then later that day i cannot function cognitively at all. I tried to keep up 1 15 min gentle walk and 20 mins of gardening a day, but now that is too much. Just trying to look after the kids, shower, cook and tidy a bit is enough for me - and i still dont feel better, even though i have reduced my activity so far. I didnt realise that other people with M.E/CFS could still do exercise like running or walking. Im glad you can -but it highlights to me just how disabled i am. And i was very fit and strong before.