Many patients seeking joint replacement are in good cardiovascular health, but not necessarily good physical health, Dr. Moucha says.
If you only run, you might have imbalances when it comes to muscle strength and flexibility. And this, paired with repetitive trauma over time, could lead to arthritis, he notes, causing your joints to wear away.
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“It’s important to cross-train,” says Dr. Moucha. Giving certain muscle groups (like the ones you use on long, slow jogs) a break once or twice a week while activating new muscles (like the ones you might use sprinting) can fend off injury, he notes.