Amy Arnett wrote:A little trick I've found that works for me is forcefully holding my breath when I stand up, just for a couple seconds. I thought to try it after hearing about the Anti-G Straining Maneuver that pilots use to not pass out due to increased g forces.
In both situations, blood pools in the lower half of the body, the resulting lack of blood going to the heart and brain causes the lightheaded symptoms. Tensing the abdomen and holding a full breath for the couple seconds it takes to stand up has almost eliminated my orthostatic hypotension.
It's a habit for me now.Timing and duration are important, hold for too long and blood pressure can actually decrease.