Tilt table was part of therapy after laying flat in bed for 6 months after complete C7 spinal cord injury. Lay down for too long you'll pass right out even if you just sit up. Had to wear teds & stomach binder to keep blood psi up. Every day they'd increase angle, i'd just hang out there with walkman on. Ditched all that stuff a yr after I was released in 1990.

Also being paralyzed from chest down, my bod can't regulate blood psi/vessel size on most of my bod so I have to take Prazosin which stabilizes, keeps bp spikes from happening but lowers bp as side effect. My norm is 90/60 give/take.