Given names often turned into family names when people were identified by their father's name. For example, the first name Ahrend developed into the family name Ahrends by adding a genitive s-ending, as in Ahrend's son. Examples: Ahrends, Burkhard, Wulff, Friedrich, Benz.
OK the definition you have used for crouching associates it with stooping (which on Wikipedia redirects to bowing. Squatting essentially involves bending at the knees and hips. If there is any bending at the waist (and maybe lowering of the head) then that is considered stooping.
The squat is the gold standard exercise when it comes to training the buttocks, according to the American Council on Exercise. Squats can be done with or without resistance, on balance trainers, side-to-side, with wide or narrow stances, off a platform, with jumps, on one leg or even with a partner. With all these variations, you can squat yourself to a fatigued tush, but may wonder when youâll start to see results.