Free chlorine actually sanitizes your water, while total chlorine includes used-up forms that don't. Here's why the difference matters for pools and drinking water.
Not all magnesium supplements work the same way. Find out which form actually matches your health goal, whether that's better sleep, digestion, or focus.
Water disinfection methods like chlorination and ozonation can produce harmful byproducts. Here's what the research says about your actual exposure risk.