Editing Concertina movement (section)

== Mechanism ==

Each point on the snake's body goes through alternating cycles of static contact and movement, with regions propagating posteriorly (i.e. any point on the snake will change from movement to stasis or vice versa shortly after the change occurs in the point anterior to it). This movement is quite strenuous and slow compared to other methods of locomotion.<ref name="Jayne2">
{{cite journal
 | doi         = 10.2307/1445288
 | first       = B.C.
 | issue       = 4
 | journal     = Copeia
 | jstor       = 1445288
 | last        = Jayne
 | pages       = 915–927
 | title       = Kinematics of terrestrial snake locomotion
 | volume      = 1986
 | year        = 1986
}}</ref> Energetic studies show that it takes more calories per meter to use concertina locomotion than either [[sidewinding]] or [[lateral undulation]].<ref name="Walton">
{{cite journal
 | bibcode     = 1990Sci...249..524W
 | doi         = 10.1126/science.249.4968.524
 | first1      = M.
 | first2      = B.C.
 | first3      = A.F.
 | issue       = 4968
 | journal     = Science
 | last1       = Walton
 | last2       = Jayne
 | last3       = Bennett
 | pages       = 524–527
 | pmid        = 17735283
 | s2cid       = 17065200
 | title       = The energetic cost of limbless locomotion
 | volume      = 249
 | year        = 1990
}}</ref>