But rather to take the entirety of your system into account each day and understand that, okay, provided your warmed up appropriately, that you're now going to stretch your hamstrings, for instance, and you're going to reach down for your toes, but that your range of motion might be adjusted that day by way of tension and stress, or by way of ambient temperature in the room. And to basically define the end range of motion as the place where you can feel the stretch in the relevant muscle groups.