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Forget crunches and planks: Could these 4 simple exercises be the secret to a stronger core?

Fitness experts say true core strength starts deeper than visible abs, and these beginner-friendly movements may help build a ...
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Silicon and carbon in iron may explain the onion-like layering of Earth’s inner core

Earth’s inner core has long puzzled scientists because seismic waves move through it unevenly. Compressional waves from earthquakes travel about 3 to 4 percent faster along the planet’s rotation axis ...
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4 bodyweight exercises for a stronger core after 65

Core strength after 65 shows up in the moments that don't look like exercise—standing tall while loading groceries and steadying yourself on uneven sidewalks and reaching overhead without losing ...