I am losing weight (slowly) and am monitoring all my intake during the day. The website I use monitors how much of a number of different things I eat with each kind of food during the day and overall, and from that I noticed my potassium, sodium and magnesium intake levels are very low and much low than the daily recommended. I looked on Amazon and came across Magnesium supplements and have ordered some as the reviews said they really help with fibro symptoms - I am wondering has anyone else tried them and have they been helpful? I'm asking because I've just joined the Ramblers and am due to do a 5 mile walk in two weeks time - as I'm usually sedentary I am of course worried about how I'll cope, in particular whether my fibro symptoms will flare up during the walk. So - anyone used magnesium?