It's a weird contradiction: What do you want to do when you're tired? You just want to sit down and relax. But when you sit down for hours at a time, your body—especially your lower back—can pay a heavy price.
How can sitting be both good and bad for you?
It's a matter of how long you sit, of course. When you sit for hours on end, your muscles grow accustomed to being "folded up." As you sit there nearly motionless, staring at the screen, your hips are completely flexed, which causes your hip flexors to shorten and your glutes to weaken. Your shoulders roll forward, your core deactivates, and your posterior chain effectively goes to sleep.
It may seem like nothing much is going on. I mean, how can you hurt yourself just sitting in a chair? But all that shortening, tightening, and weakening of your core and hip muscles leads to imbalances and instabilities that result in lower-back injury and pain for millions of people.
Simple alternative to surgery and drugs
Back pain is...
Source: 4 Lower-Back Exercises For Desk Jockeys
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