Exhaustion

<100%hp 100%m 2%mv 7278tnl> e e You are too exhausted. <100%hp 100%m 2%mv 7278tnl> Wandering in the desert [Exits: east south west] A female desert deer shies away from your approach. <100%hp 100%m 0%mv 7278tnl> Had 2% moves, tried to go east twice, first time it says Im too exhausted, second time I move normally and use the last 2%. Is this a bug or something to do with random movement costs?