Beat Saber Black Eyed Peas - Pump It (fit beat) on Expert+

This is known as a "fit beat" map. Most songs I play in Beat Saber are mostly just moving your arms and flinging your wrists. There are maps, such as this one, that make you move all over the place, including doing some squats in order to avoid certain walls. My legs are usually jello for a couple days after I play one of these.