A German measured Billy's upper right arm with his thumb and forefinger, asked a companion what sort of an army would send a weakling like that to the front. They looked at other American bodies now, pointed out a lot more that were nearly as bad as Billy's. (4.17.5)
The Englishmen were clean and enthusiastic and decent and strong. They sang boomingly well. They had been singing together every night for years.
The Englishmen had also been lifting weights and chinning themselves for years. Their bellies were like washboards. The muscles of their calves and upper arms were like cannonballs. They were all masters of checkers and chess and bridge and cribbage and dominoes and anagrams and charades and Ping-Pong and billiards, as well. (5.12.5)
Most Tralfamadorians had no way of knowing Billy's body and face were not beautiful. They supposed that he was a splendid specimen. This had a pleasant effect on Billy, who began to enjoy his body for the first time. (5.40.1)