I’m a crappy wife

It’s been 2 years TTC and now I want to be selfish and focus on us. I want to finally get in banging shape and I want my husband to too. If we’re gonna work this hard for a kid someday then I want to be able to run around and play with them. My husband of 11 years has turned into a whiner. He’s always not feeling good or fighting something off. So he can’t start working out right away or it will “get him sick”. Also, his sperm analysis came back fine so he says there’s no reason for him to exercise. He’s gained 50+ pounds over our marriage and I’m starting to feel less attracted to his body. I love him and couldn’t imagine my life without him but I feel he could help take care of himself better.