My DH gave up everything I couldn't have whilst I was pregnant. No alcohol, salami, prosciutto, sushi, soft serve.
Why?? No idea. I told him so many times there's no need for him to stop eating these foods and his response was " we're in this together ". I thought it was ridiculous but it's what he wanted to do.
He also put on 10kgs to my 17kgs so he was with me there too!!!!