Get a BPA-free bottle.
Credit: David Shultz / Getty Images

Bisphenol-A, or BPA, is also becoming easier to avoid. Gear brands like CamelBak and Nalgene offer several BPA-free bottles and hydration packs, and more food companies are switching to BPA-free containers. Avoid canned foods whenever possible, or go with Eden Foods, which makes awesome organic beans in BPA-free cans. You may also want to bypass foods packed in plastic containers with the recycle codes 3 and 7, which usually contain BPA, according to the National Institute of Environmental Health Sciences. And take this as an excuse to finally clear out your mishmash of Tupperware and replace it with a new set of BPA-free reusable containers.