She will be showing a demo of the company's new alarm system. a demo version of the software [+] more examples [-] hide examples [+] Example sentences [-] Hide examples
Photo Credit shih-wei/iStock/Getty Images. Magnesium is a naturally occurring element that people need as a key nutrient. The human body relies on magnesium for various purposes, and people who don't have enough can suffer various symptoms, through dry, itchy skin is not considered one of them.
1 It is found in whole grains, spinach and other leafy green vegetables. A deficiency in magnesium can cause painful leg cramps, migraines, and also insomnia.  Potassium: Potassium is another important mineral, the lack of which can cause fatigue, muscle tightness, and cramping.