When you're thirsty, you go to the supermarket, grab a bottle of any water and drink it. Wait... there's a huge mistake here: you shouldn't grab ANY water from the shelf. The first thing to look at when you pick a bottle of water is the bottom. Turn it over and look for the recycle symbol with a number inside of it.

Those marks might seem meaningless but actually have plenty of information. I'm gonna tell you which marks indicate that the plastic this bottle is made of will most likely already be releasing dangerous chemicals. Those chemicals will penetrate into your drinks or food. You'll also find here 12 other things you shouldn't buy and why...

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