  We answer an important question in general relativity about the volume
integral theorem for exotic matter by suggesting an exact integral quantifier
for matter violating Averaged Null Energy Condition (ANEC). It is checked
against some well known static, spherically symmetric traversable wormhole
solutions of general relativity with a sign reversed kinetic term minimally
coupled scalar field. The improved quantifier is consistent with the principle
that traversable wormholes can be supported by arbitrarily small quantities of
exotic matter.
