True, it's faster and more convenient to buy a bottle of water than it is to take a few seconds to fill a glass with tap water. It can also help you track your water intake because each bottle clearly indicates how much water it contains. Many people also use empty bottles to refill and reuse. Some believe they are doing something good by reusing these bottles; After all, they're saving money and wasting less plastic. These bottles, however, should not be used more than once and this can have adverse effects. Bottles are rarely washed properly before use, which can lead to bacterial contamination in the water that is consumed. Even when bottles are washed, the materials decompose much faster, creating cracks in the bottle that can also be contaminated with bacteria. In addition to this, plastic bottles contain some substances linked to certain health problems. Antimony is a heavy metal that can lead to lung and cardiovascular diseases while BPA can affect the brain and even lead to cancer. When some people reuse these bottles, they sometimes have a tendency to forget them in the hot car and then continue to drink from them. In this way they expose themselves to high quantities of these substances. Antimony and BPA slowly leach out of plastic on their own, but leaving them exposed to heat increases them by more than 300 times. This can potentially lead to