When the back forms an almost "C" or bow shape caused by leaning FORWARD. [[Bent back]] is the opposite of [[arched back]], which is caused by leaning backwards. In this the middle of the spine is further behind/up than the top and bottom of the spine. 

Sometimes seen when [[spooning]] or a character is otherwise curled around something, eg. post #7203233.

Not to be confused with [[backbend]].

h4. Examples
* !post #6218161
* !post #7141985
* !post #6891210
* !post #3024960

For the less extreme version use [[slouching]].

h4. See Also
* [[bent over]]
* [[tag group:posture]]
rounded_back 弯背 C背 蜷缩