Drink plenty of water and avoid dehydration. Nighttime cramps can sometimes be a result of not drinking enough water. Make sure that you're drinking enough H2O during the course of the day in order to prevent cramps during the night.
Millennials is an abbreviation of millennial generation and is a term used by demographers that refers to a segment of the population born between the years of 1980 and 2000. Millennials are sometimes referred to as Generation Y in the media.
Millennials are currently aged 20-35, or born between 1980 and the end of 1994 (with some more generous definitions taking in those born up to 2000). They also get called Generation Y, because they follow on from Generation X (born 1965-1979), and other, less flattering names.