03/24/2026
It sounds logical to rest your joints to protect them - but research suggests the opposite may be true.
When joints stop moving regularly, cartilage can lose access to the nutrients it needs. Movement is what drives fluid through joint tissue, keeping it nourished and functional. Without it, that process slows down.
At the same time, the muscles surrounding a joint begin to weaken from disuse. Those muscles act like shock absorbers, reducing the load the joint itself has to handle. When they atrophy, the joint takes on more stress with every movement - not less.
Research has found that weaker thigh muscles are associated with a higher prevalence of knee osteoarthritis, even in people with no history of joint injury. That suggests muscle weakness may contribute to joint deterioration rather than simply result from it.
The picture that emerges is one where inactivity gradually makes movement harder, which can then reduce activity further - a cycle that may accelerate joint decline over time.