correct phone posture

Photo: mapodile/iStock

9 of 10
Hold the Phone Properly

Engelman advises all her patients to "stop looking at your devices in poor lighting," which, she says, causes you to squint and speeds up the formation of lines around your eyes and forehead. Instead, swipe and scroll in better lighting and hold your phone at a 45-degree angle to prevent slumping—a move that can lead to "tech neck," or a wrinkled neck.