' An Act to preserve daylight and provide standard time for the United States ' was enacted on March 19, 1918. [See law] It both established standard time zones and set summer DST to begin on March 31, 1918. Daylight Saving Time was observed for seven months in 1918 and 1919.
Nitrate-rich foods include lettuce, parsley and spinach. âLeafy vegetables contain chemical nitrate that improves heart health,â the Mail Online reports. In a recent study, researchers looked at the effects of a nitrate-rich diet on rats.
Dark green leafy vegetables and beets tend to be among the foods highest in natural nitrates. If trying to increase your nitrate intake, eating arugula, celery, lettuce, beets, spinach, watercress and chervil are good options as they contain more than 250 milligrams of nitrates per 100 grams, or 3.5 ounces.eets on table. Photo Credit pilipphoto/iStock/Getty Images. Nitric oxide plays a number of beneficial roles in the body, including increasing blood flow to your brain, lowering blood pressure levels and limiting the formation of blood clots. Foods don't actually contain nitric oxide.