been noticing the good hours before a crash, especially timing it now. Saturday at the market, standing around, felt completely fine. Sunday comes and I can’t get up.
Found a paper on biphasic autonomic response in dysautonomia that maps this exactly: sympathetic rebound happens 12-24 hours later, not during activity. The study tracked HR variability and orthostatic intolerance over time, not just the first 30 seconds standing. That’s the actual gap.
My doctor sees me on a good day and says “looks fine,” but fine is actually the warning sign, not the all-clear. What pre-crash markers are you noticing?