Using ‘muscled’ on it’s own increases muscle density without changing body shape, but using ‘muscle bound’ also changes body shape to be more like a body builder with wider shoulders. I use a local install so I don’t hit keyword limitations, but if you get more creative with your descriptivism you can improve results that might otherwise be blocked.

For example, if you want fat people try: chunky, hefty, thick, weighty, pillowy, rotund, robust, expansive, inflated, massive, engorged, enlarged, bigger, round, soft, broad, chonky, stuffed, over stuffed, filled, over-fed.