There comes a turning point in intense physical struggle where one abandons oneself to a profligate usage of strength and bodily resource, ignoring the costs until the struggle is over. Women find this point in childbirth; men in battle.
Diana Gabaldon (2015). “The Outlander Series 8-Book Bundle: Outlander, Dragonfly in Amber, Voyager, Drums of Autumn, The Fiery Cross, A Breath of Snow and Ashes, An Echo in the Bone, Written in My Own Heart's Blood”, p.561, Dell