1) Sleeping near your cell phone
The jury is still out for how unsafe this really is, but who needs your phone that close to you while your sleep anyway? A nearby night stand is a safer bet.
2) Eating meat from fast food restaurants
The heavy use of preservatives cause some who err on the safer side to opt for organic choices, but there’s no definitive proof that hose preservatives are carcinogenic in the short or long term.
Don’t do this.
4) Bathe in highly radioactive nuclear waste
Don’t do this either.
5) Using plastic water bottles
This one is also largely undecided. Some say when heated, the plastics can diffuse into the water, but again, no one knows for sure.