Step 1: Tell the chiropractor that yes, you do (probably, still,) have an exercise ball because you used it when you were pregnant (and in labor, for that matter). He is impressed, and gives you a sheet of exercises that you can do using it.
Step 2: Come home and find the exercise ball, deflated, in its original box, pretty much exactly where you thought it would be in the basement. Since you moved house 1.5 years after the last time you used it, this is quite an achievement.
Step 3: Find a pump and the plug right there in the box along with the deflated ball.
Step 4: Let the five-year-old help you inflate the ball.
Step 5: Watch the five-year-old bounce the ball around until you can finally use it for its intended purpose, briefly.
Step 6: Pick up the second-grader from school. Have the five-year-old refuse to go to dance class even though it’s dance class day and in spite of your best efforts, bringing her all the way there and making her tell the teacher herself that she’s not coming to class today.
Step 7: Suggest that the seven-year-old do his homework straight away when you get home, just as he would have done in the library while his sister was at dance class. He will agree, but he won’t mean it, and as soon as he comes in the door it will be mayhem times two with the exercise ball until you banish it to the basement, amid wails and gnashing of teeth.
Step 8: Wonder when next you’ll bother your arse to get it back upstairs and do your exercises.
Maybe it’s my resolve that needs strengthening, just as much as my back muscles.