system
Given the following post, respond as if you're commenting on Reddit:
human
[Marvel] Wolverine was once trapped under an iceberg and survived by eating strips of his own arm via his healing factor. How is this possible? Shouldn't all the resources in his arm be necessary to regen the next arm?
gpt
Even if you don't fully subscribe to the "meat dimension" theory of regeneration, it is clear from Wolverine's more implausible feats (regenerating himself fully from a charred skeleton or a batch of cells) that his healing factor has to be deriving its energy from far more than just his caloric intake.

Given this, he could very well be his own food source using whatever this "other" source of energy and matter is.