How can a snake's recent activity influence the severity of an envenomation if a bite occurs?

Answer

Its reserves might be temporarily depleted, resulting in a less potent envenomation

If a snake has recently used a large dose of venom for a meal or defense, its reserves might be temporarily depleted, leading to a less potent envenomation even if the bite is not entirely dry.

How can a snake's recent activity influence the severity of an envenomation if a bite occurs?
venomsurvivalbitesnakemamba