I'm 53, fit and slim and have been an athlete most of my life, sometimes getting lazy.

I have problems at the moment in that I'm usually tired, grabbing naps, my urine is often strong and I get dizzy spells if I stand up quickly. The most worrying thing is that I often wake in the early hours feeling very odd, like my body is 'trying to yawn' (quite anxious) and I can't get back to sleep. Hy heartbeat is very 'pronounced' at this time. I live a fairly stress free life.

I'm in work (school science dept) and I've just tested my BP and it's 94/63 with a HR of 52.

I will see my GP but what are your thoughts, and is there anything I can do to help the situation. I don't feel thirst very well and may well be dehydrated a lot of the time. I've also had low iron before.

Any help appreciated.

Peter (UK)