You make choices, your spouse makes choices. Ultimately the biggest choice is what do you want to do for you. You choose to be fit, and that is wonderful. If he/she decides that becoming fit is an attractive goal, he/she has a great teacher and role model. I would say not to be concerned about what other people think, but I know that’s not what it’s like in real life. Just try to be comfortable in the fact that you have made an incredibly good choice. It’s up to your spouse to decide whether or not to follow.