User blog comment:Dragonzzilla/Assassin Idea/@comment-1888392-20130720183239/@comment-3046679-20130723012435

Al's health could regen to full, one block at a time. It took 5 seconds or so for one block to regen, provided you weren't hit. And it's mostly because Abstergo Animus was built solely for reliving memories, not engrossing the subject in the world, hence auto-heal. Also, it was consistent

Connor's health regens however the fuck it pleases. Sometimes it smoothly goes up to full right after combat. Sometimes it regens piece by piece when in freeroam for no reason. And the in-combat regen is so minor it might as well not be there at all.

Why the Assassins returned to this inferior form of restoring synchronization that far into the upgraded Animus, I will never know.