To those of you who responded to my plea yesterday, thank you all I slept like a baby last night, thats not like me at all! Im such a light sleeper normally. Anyway, I got home, put the deep freeze gel on my legs (ouch) and got a good 10.5 hours sleep. Woke up with the most mightiest headache (no, I wasnt on the vino!) so set off to the supermarket before worK. I am now sipping tonic water with lime, and ate a banana (thanks oldgirl). I have chatted to a guy at work about what happened who's a super nutritionist and exercise guru. He thought I may have some sodium deficiency (explains the extreme sweat after 5 mins, headache, fatigue, cramps?) and recommended I give zero extreme sport drink tabs a go. So I have one ready with another banana before I go out later. I am just going to aim for a really slow 20 minutes and see how I feel. Then I am off work till next Wednesday so I can have a nice lie in tomorrow morning. Bliss.