Tape recorder style punching in/out
Many of us who come from the world of tape recorders still like recording along and simply punching in and punching out when we deem it necessary, without stopping. In Logic Pro, we do this with Quick Punch and using Record Toggle.
Hold the mouse down on the Record button, check Allow Quick Punch-in, and switch to Record/Record Toggle. Or, with Quick Punch-in enabled, instead of pressing R to go in and out of record, press the asterisk key. This method is still especially helpful when you are running Logic but someone else is performing.