《论衡·卷七·语增篇》
说圣人忧虑社会关心百姓，身体瘦弱不健康，身上肌肉不丰满光润，是可能的。但要说尧、舜瘦得像干肉、干鸟，而桀、纣肚皮上的肥肉却垂下一尺多，这就过份夸大了。
夫言圣人忧世念人，身体赢恶，不能身体肥泽，可也；言尧、舜若腊与腒，桀、纣垂腴尺余，增之也。
It is possible to say that the saint is worried about society and concerned about the people, and thus looks thin and unhealthy, with insufficient muscle mass. However, it is an exaggeration to say that Yao and Shun are as thin as a piece of dried meat or a dried bird, while the fat on Jie and Zhou's belly hangs down more than a foot.