I think there's a difference between having a food and fitness hobby and having an obsession. I've been in both places. One is a painful, all-consuming comparison trap that overshadows all other areas of your life. One really is just a hobby. For me, I can enjoy it as a hobby when food is pleasure and fitness is fun. It's a hobby when it occupies a small part of my day - the hour I spend baking, the 12 minutes I spend exercising. When I was obsessing, I'd start reading nutrition and fitness information as soon as my eyes opened and continue thinking about it all day long, weighing pros and cons of various approaches, judging my own behavior, judging others' behavior, doubting my choices, feeling superior, or less-than, depending on how I measured up to random strangers with opinions. As an obsession, it's not much fun. As a hobby, it's shifted more toward baking and cooking than restricting, health and happiness over leanness, fun movement over muscle building or fat loss. I still like food and fitness as a hobby, but not as an obsession anymore.