Hi, I feel as if I'm being a bit precious wanting my Hb kept in the high 8s as a minimum but anything below this and I can feel my heart pounding, get breathless easily and have a constant low grade headache.
Years ago I used to be able to work with my Hb in the 7s.....looking back, I don't know how I did it.
I do wonder though whether its worse if you have lowish oxygen sats to start with.
Regards
Chirley
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