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How to Calculate Blood Alcohol Level

Watch more Bar Life & the Art of Drinking videos: Subscribe to Howcast's YouTube Channel - Learn how to calculate your blood alcohol by following this guide. Howcast uploads the highest quality how-to videos daily! Be sure to check out our playlists for guides that interest you: Subscribe to Howcast's other YouTube Channels: Howcast Health Channel - Howcast Video Games Channel - Howcast Tech Channel - Howcast Food Channel - Howcast Arts & Recreation Channel - Howcast Sports & Fitness Channel - Howcast Personal Care & Style Channel - Howcast empowers people with engaging, useful how-to information wherever, whenever they need to know how. Emphasizing high-quality instructional videos, Howcast brings you experts who provide accurate information in easy-to-follow tutorials on everything from makeup, hairstyling, nail art design, and soccer to parkour, skateboarding, dancing, kissing, and much, much more. Warning Don't drink unless you're of legal age. Drink responsibly, and never drink and drive. Step 1: Determine the number of drinks Determine how many drinks you've had. A standard drink in the U.S. contains .6 ounces of pure alcohol. Tip Generally, .6 ounces of pure alcohol is found in 12 ounces of beer, 8 ounces of malt liquor, 5 ounces -- or one standard glass -- of wine, or 1.5 ounces -- one shot -- of 80-proof liquor. Step 2: Multiply by .025 Multiply the number of standard drinks you had by .025. This will give an approximation of your percent blood alcohol. Tip Remember that men metabolize alcohol faster than women, and that people who weigh more absorb alcohol faster. Step 3: Determine the time since your last drink Determine the amount of time that has passed since you took your last drink of alcohol. Step 4: Subtract .025 percent Subtract .025 percent for each full hour that passed since your last drink. If 2 hours have passed since you finished your third drink, subtract .05 from 0.075 to determine an approximate blood alcohol level of .025 percent. Step 5: Wait To be safe, wait to drive until you calculate your blood level is back near 0. Wait at least an additional half hour if you are a woman or you weigh less than 150 pounds. Did You Know? Research has shown that youths who use alcohol before age 15 are 5 times more likely to become alcohol-dependent than adults who begin drinking at age 21.
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