  In the context of GR, we study the thermodynamic stability of evolving
Lorentzian wormholes at the apparent horizon. The average pressure of the
anisotrropic components is considered as the pressure of the wormhole.
According to the requirements of stable equilibrium in conventional
thermodynamics, we calculate the heat capacity at constant pressure and Gibbs
free energy and analyze the local and global thermodynamic stability of the
wormhole.
