Eat beets. If they turn your urine pink/red, then you have low stomach acid. Stomach acid is a very important first step in digestion. Without enough, you can't absorb B12, and you have trouble absorbing zinc as well as several other nutrients.
How many drinks are in a bottle of wine? A typical 25-ounce (750 ml) bottle of table wine holds about 5 standard drinks, each containing about 5 ounces. This serving size of wine contains about the same amount of alcohol as a 12-ounce regular beer or 1.5 ounces of 80-proof spirits. Get to know what 5 ounces looks like by measuring it out at home.
These are known as a fifth, because they are 1/5th of a gallon (25.6 ounces). So these wine portions can be considered a fifth of a fifth. For the next picture, I split the bottle between four glasses of wine. That's 187 ml, or 6.3 ounces of wine each. The difference in volume is barely noticable. If I owned a restaurant, charging $12 a glass, I'd probably coach my servers on how to get exactly 150 milliliters into a glass.