What does your phone, tablet, wearable, laptop, and you all have in common?

Answer: they work better (translation: more efficiently) when charged.

Have you ever tried to use your device when it was running low on juice? A newer smartphone will warn you when you get low (the iPhone's threshold is 20%). When enabled, your device will begin to shut down some features to save battery life.

Did you realize that your body sends you signals? These may include (among others):

• Loss of focus
• ...