And your house smells better, too!
I remember the character in one of Jan Karon's books who, when her husband died, baked cakes for absolutely everyone.
Getting busy can be a very effective way of working through stressful feelings. Sometimes there's a problem you simply cannot solve right away, but until the solution comes, you can occupy both your mind and your body, and that really helps. It won't solve the problem in itself, but it can keep you together until you can solve it.
Some people clean. Some walk. Some weed the garden or cut the grass. Some write. Some play music (themselves - I don't mean recordings).
You could be doing so many worse things to deal with your stress. You're not getting drunk, you're not shooting drugs, you're not driving at 90 miles per hour, you're not yelling at the dog or the kids. You're doing something for yourself, your family, maybe even your neighbors. The worst thing about it is that perhaps you are helping other people get fat. But I bet they aren't complaining.