A simple example is the order in which you clean a house. I enjoy cleaning but I do find that I get tired over the course of cleaning a home. So I set about a cleaning job by starting with those tasks that benefit from having high energy, which I have at the beginning. Most often, and especially in larger homes, this involves dusting and then vacuuming the entire home first off. This allows me to work faster and to get less tired over the course of the cleaning.
Whatever the activity, a little attention to how your body works can save time and energy and make the task more comfortable.