The best way to get your husband to exercise is to make it fun and enjoyable. Try to find activities that you both enjoy, such as going for a walk or bike ride together, playing a sport together, or taking a dance class. You can also try to make it a competition by setting goals and rewarding yourselves when you reach them. Additionally, you can try to make it a part of your daily routine by scheduling a specific time each day to exercise together. Finally, make sure to encourage and motivate your husband to stay active and keep up with his exercise routine.