My first male fitness shoot for a landscaper client. He had been dehydrating for the shoot since the day prior and was not in the best mood, so we didn't have a lot of time to mess with lighting.
I went with a simple 3 light setup with a 47" octa boomed above and slightly in front of him to edge light his pecs and abs from above; and two gridded strip boxes behind him at 45° to separate him from the background a little more. I also used the black side of a 5x7" collapsible background on a table at knee height for negative fill to make the muscles pop a little more.
He was concerned about his freshly shaven head until we saw the photos and I told him he had a Jasan Statham/Vin Diesel vibe going on. After that he was more at ease and actually pulled up some movie posters on his phone to emulate the poses.