For people who may not be clear about the dangers of texting while walking, exercising or driving, the American College of Emergency Physicians issued a warning this week advising avid texters to resist the urge to read or send messages when engaged in another activity. Emergency room physicians are seeing an increasing number of injuries — both minor and serious — that patients attributed to texting while they did something else, according to the ACEP. The dangerous trend has even led to several fatalities.