Flexibility is how far a muscle stretches; mobility is controlled joint range. Desk work kills ankle and hip mobility, making squats and bends painful. Fix it with loaded full-range movements like deep squats and wall ankle drives, not just stretching.
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I want you to try touching your toes. Great, you can. Now try squatting flat-footed without falling over. That's the one that really matters. Peep game. Flexibility and mobility are not the same thing, and the difference matters a lot after 30. For the simple reason that flexibility is how far a muscle can stretch, while mobility is how well your joints move under control. Here's the problem. Most desk workers and truck drivers, they lose their ankle and hip mobility first. For the simple reason that they sit a lot, you feel me? And that's exactly what makes squatting, bending, and lifting feel awful, at times even painful. And no, the fix isn't endless stretching. It's loaded movement through full range of motion. I'm talking about practicing deep bodyweight squats, work on ankle drives against the wall, and do controlled hip circles daily. These work like magic, and they literally restore the range your job quietly stole from you. Better mobility means less joint pain, better workouts, and a pain-free body you want.