Hi! I just wondered if anyone else has experienced this? I came home from work today and was feeling pretty good for a change, so decided I would walk my dogs over the fields, we were only out for about 45 minutes, coming back its slightly up hill, while walking back I come over really hot, slightly light headed,i felt awful, heart was racing! i slowly walked back and now i feel shattered, the backs of my legs feel awful, they are aching like crazy, this was two and a half hours ago, i have been sitting down ever since i came back and still don't feel right! Has anyone else experienced this..... very strange.... before i went out i was feeling really good for a change! Beginning to think I'm just falling apart! LOL