Mechanics: Why Discs Bulge

Lately I’ve heard many people saying they have “bulging discs” and the result is some form of back or leg pain. As an exercise physiologist with good training in biomechanics, the mechanics of movement have always fascinated me; this week, I’m going to talk about that subject, starting by stating a fact about those bulging discs:

Everyone who walks upright has discs that begin to bulge at some point in their lives.

Bulging discs are simply part of the deal that goes along with walking. Whether they cause pain or . . .

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