Americans spend an average of 58 minutes per day on their smartphones, according to a recent report from Experian Marketing Services. Talking accounts for only 26 percent of that time. The other 73 percent is devoted to texting, e-mail, social networking, and web-surfing – in other words, activities spent hunched over a little screen. (Usage varies according to the type of smartphone: iPhone users spend an average of one hour and 15 minutes with their phones each day, with only 22 percent of that time devoted to talking.)
Poor body posture “weakens your will,” especially for iPhone users.