A new study says you need 10 hours of exercise a week. Can that really be possible?
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- 05/21/2026, 4:46 PM
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scientificamerican.com
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- 05/21/2026, 4:46 PM
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scientificamerican.com
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- 05/21/2026, 4:46 PM
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scientificamerican.com
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- 05/21/2026, 4:46 PM
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scientificamerican.com
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- 05/21/2026, 4:46 PM
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scientificamerican.com
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- 05/21/2026, 3:01 PM
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science.org
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- 05/21/2026, 3:01 PM
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science.org
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