Page 446 - Complete Krav maga : the ultimate guide to over 250 self-defense and combative techniques

If you prefer, you can use the reflexive version of this defense (page 279) even

from a fighting stance. The reflexive defense, with the fleshy part of the forearm,
provides more cushion. However, it is sometimes more difficult to rotate the
forward arm around because the nature of the fighting stance inhibits the turning
motion of the hips and shoulders.