Gut bacteria rewire fat tissue to burn more energy. Scientists have found four bacterial strains that play a role in converting white fat cells into beige fat in mice. Beige fat burns calories whereas white fat stores it.
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They get up to 24 hours of battery life with the ANC on, or closer to 40 without, which is fine, but not quite as good as some of its more expensive counterparts. Speaking of active noise-canceling, our reviewer Ryan Waniata said “it holds its own against competitors from Sony and Bose, and outdoes rivals like Sennheiser's Momentum 4 Wireless.” It works just as well for calling as it does for catching some tunes, and has a microphone that folks on the other hand of the call described as clear and detailed.