It is best to proceed with your plans for the day and not involve yourself with too many extra-curricular activities; at least for the morning. Before the family melds into the couch or perhaps leaves the house for their selective activities, you might talk with them about the benefit of an exercise program; with your enthusiasm, you may be able to encourage them to sign up for some curriculum of their own. Exercise encourages the body to find and keep a chemical balance during the day. There are good results from the tests run on people that exercise: hormones, mental well-being and the desire for the right sort of food as well as good digestive or intestinal health, etc. You can prevent problems or arguments through your thoughtful behavior.