For many of us, enjoying a glass of wine or pint of beer is the perfect way to unwind after a hard day’s work. But it seems having a drink in a pub or restaurant could be about to get a lot less relaxing. Campaigners are calling for lines to be printed on glasses to show drinkers how many units of alcohol they are really consuming—and potentially to shock them into cutting down. The plans, put forward by the Drinkaware charity, would see unit measure lines added to glasses, based on average-strength drinks—a 4 percent beer, 13 percent wine and...