How low is low enough to make you feel crap? And what (other than more fluid/ salt) can be done about it?
Mine is usually in the 90s over the 60s but have recently been feeling more dizzy than usual on standing up. Just did it and it's 88/55. GP has never been remotely concerned about 95/65 etc., but I can't help feeling that I would feel better if it were higher. My resting heart rate (not great anyway, normally about 70) is also higher (80ish) when it gets low and I worry this can't be good for long-term health.