Wired Differently: Caffeine & Your Genetics

from My Verbal Journal: Let’s Chat · host Maci Jones

Ever wondered why your friend can down four espresso shots and feel nothing while one cup of coffee sends your heart racing? This week, I am joined by Katie Harnan to break down the science of caffeine metabolism and why the universal "400mg of caffeine a day" recommendation doesn't work for everyone. Plus: life updates, graduation, playoff hockey, reality tv, & more⁠⁠Personal IG: @macileejones⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠Podcast IG: @myverbaljournal.letschat⁠⁠⁠⁠Katies IG: @katieharnen⁠

Episode metadata supplied by the publisher feed · Published Apr 29, 2026

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Wired Differently: Caffeine & Your Genetics

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