People trying to lose weight may not always be able to tell whether a new diet or exercise regime is having the hoped-for fat-burning effects. Researchers at Japan’s NTT Docomo, the country’s largest mobile-phone provider, may have a solution—a smartphone-connected device that measures acetone in the breath as a sign of fat-burning.
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To read the original article: A Breathalyzer That Knows When You’re Burning Fat | MIT Technology Review
