So one of the main reasons humans began to roast, and boil, and bake meat in the first place, was to break down those connective tissues that we can't chew, so we could get the meat.

所以人类开始烤、煮、烤肉的主要原因之一，首先是为了分解那些我们不能咀嚼的结缔组织，这样我们就可以吃到肉。