Push through the burn for a few extra reps. Do an extra cycle of HIIT. Run an un…

Push through the burn for a few extra reps. Do an extra cycle of HIIT. Run an unintended 1/2 mile. Turn around as you're about to leave the gym and bang out one last set. It's amazing how satisfying work that's unexpected, unplanned, or unintended can be. Try it out.