Netflix, text messages, Instagram, Facebook, Twitter, Hulu, Amazon Prime — the list of things that keep me up at night is impressive, and they all come from the same source: my devices. At times I feel chained to my computer, iPad, and smartphone, but it's important that I don't bring them into bed with me. "Keep your bedroom an electronics-free zone," Dr. Stiehm said. "TVs, phones, radios, tablets — these all serve as light sources and can have a big impact on getting quality sleep."