When someone's back forms an inverted arch. The opposite, caused by leaning forward is [[bent back]].

h4. Examples
* !post #5341307
* !post #5405720
* !post #6293846
* !post #6250792

h4. See also

* [[contrapposto]]
* [[Tag Group:Posture]]
仰け反り絶頂 腰前屈 伸腰 伸懒腰