A standard serving of wine is 5 ounces. That's about 3 1/3 filled shot glasses, but we're guessing you don't measure when you pour—and that could mean you're seriously over-drinking. But get this: The type of wine glass you choose and how you pour can be blamed for too much drinking too, according to research from Iowa State University.
Researchers found that when using wide glasses, people poured 11.9 percent more booze. Volunteers in the study also poured 12.2 percent more vino when they were holding their glasses, compared to pouring into glasses on a table. The most surprising factor? Participants filled up with 9.2 percent more white wine than red. (Weird!)
But don't worry, you don't have to give up white, or swap your glassware. Your solution: If you're not going to measure, try to stick to a general rule of pouring. For example, filling only half your glass or stopping when the wine is "two fingers from the top", helps you pour less over the course of a night, says a study from Iowa State and Cornell. Women who used this very rule wound up with 27 percent less wine than women who did not.
Do you tend to over-pour wine? Tell us below in the comments or tweet us @Shape_Magazine.