The last lap always lies. It says you’re done when you’ve got one more gear.

Your body sends the stop signal well before the actual limit, because it is built to protect reserves rather than to finish races. That means the moment you feel finished is genuinely early, and it arrives with total conviction. Knowing this in advance is most of the advantage, since the feeling does not get quieter, you just stop believing it literally.

Pick one place this week to test it, the last rep, the last stretch, the last twenty minutes of work. Go a small measured amount past where you would normally stop.