<s>[INST] I have had low blood pressure for awhile. 90/60 or lower. I m suffering at night with leg cramps and sometimes when I wake up I feel numb. I increased my water intake, added potassium, I m exercising but I m not sure if I should limit exercise? Occasionally lightheaded especially standing for long periods of time. Any suggestions would be welcome. Thank you [/INST] Howell come to ChatDoctorI really appreciate your concern, low blood so called can not be itself, but this is an emergency, it happens in certain obvious clinical condition and which are absent here, better to get done the clinical examination as long as your reading of BP is concern, for the other symptoms these may be nonspecific, (You have not mentioned your age and gender else something more correct reason could be thought) hope this information helps, take care and have a nice day. </s>