It Was Never Just a Sore Back.
The ache creeps in around hour three — the shifting, the crossing and uncrossing of legs, the standing up just to feel something other than the chair. By the evening it's a stiff lower back and a tailbone you're very aware of. A bad chair quietly taxes your whole day.
Hyvorox won't reinvent your office. What it does is take the pressure off the exact spots that hurt, so the hours you have to spend sitting stop leaving a mark. Comfort you stop noticing is the whole point.
