BackGuard
Why your back needs this
Nothing dramatic happens on any single day of sitting. That's the problem. Here is what a chair quietly does, and why tiny resets beat heroic weekend workouts.
Discs need motion
Spinal discs don't have a blood supply, they get nutrients only when you move. Long sits starve them.
Hips shorten fast
Sitting locks the hip flexors, which yank the lumbar spine into a painful over-arch by day's end.
Prevention is cheap
60 seconds of movement every 20 minutes is the cheapest insurance against a back you can't fix.
Habits, not heroics
You don't need a gym. You need small, repeated resets, the streak is the point.