People who use their smartphones heavily to text and email are prone to muscle fatigue which is a type of RSI. The effects can get so bad that the pain can reach all the way up to your wrist and can be utterly debilitating to your hands.
过度使用智能手机发短信和邮件的人会造成肌肉疲劳，这是一种典型的重复性压迫损伤。后果就是你的整个手腕和手都会感到疼痛无力。