The other day, during a run that just felt longer and harder than usual, I cursed my body under my breath. “What’s wrong with you? You’ve got two copies of the ACE endurance allele!” ACE is a gene that’s linked to physical performance, and I knew which variation I had (allele is a science term for different forms of the same gene) because my ...

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Written by Lisa Elaine Held

Tuesday, December 8, 2015