I just make sense

Fun fact; the reason why blood > bleed in English is by the same umlaut process seen in German. This particular umlaut is the same as foot > feet, where an original Old English 'fōt' (foot) in plural became 'fœt' and eventually 'fēt' (feet). Likewise 'blōd' became 'blēdan' through this umlaut, it comes from a Proto-Germanic 'blōþijaną', but German keeps the original sound almost intact; blōþijaną > bluotan > bluten.