Step-ups not only strengthen your quads and glutes, but also improve range of motion.
Step-Ups Skiing and snowboarding are both “leg sports,” so strengthening the quads is hugely important, Morin says.
The Governator recently became a symbol of excess again for reasons unrelated to the size of his quads.
1820 as a shortening of quadrangle (n.) in the building sense (in this case "quadrangle of a college," Oxford student slang); 1880 as short for quadrat (n.); 1896 as quadruplet (n.), originally "bicycle for four riders;" later "one of four young at a single birth" (1951, of armadillos); 1970 as quadraphonic (adj.). Related: Quads.
A set of four headlights on a car (1950s+ Hot rodders)
[said to be a shortening of quadrilateral, ''square'']