There’s a group of people in the U.S. who claim to have EHS, or Electromagnetic Hypersensitivity. In other words, they say they’re allergic to Wi-Fi and cell phones. They claim 5% of Americans suffer from this problem, which causes headaches, muscle spasms, burning skin, chronic pain and public ridicule. Diane Schou says it got so bad she couldn’t think and started having chest pains, so her husband built a “radio-wave resistant” wooden cage lined in wire mesh to sleep in. When that didn’t help, she moved to Green Bank, West Virginia, which is in a Radio Quiet Zone designed for scientific research where other EHS sufferers have moved and the 7-11 stocks plenty of pre-made aluminum foil helmets.