"She girdeth her loins with strength, And maketh strong her arms"
I love this verse. Along with the verses where Paul uses races as analogies, this verse shows how deliberate we should be about strengthening our bodies and staying healthy physically. Is it the most important thing in the world? No. And I seriously doubt this woman was obsessed with her own fitness--nor did she probably have to be with how hard she worked. The Bible says that physical strengthening helps, but like everything in this world, it's temporal. However, for our health, which is afterall what allows us to take care of our families, we *should* be physically active. The woman in Proverbs 31 was a VERY busy woman. But she still made time to strenthen her arms and body. She was concerned about her family enough that she put her own strength on her priority list.
Applying this principle is, admittedly, not the easiest thing in the world for me to find time for. I have to perfectly time dinner to have enough time to go for a walk between dinner and the little one's bed time. But I DO make it a priority. I do not throw a fit if I cannot get "my time" in, and no, it does not happen every night. But I find that if I let my husband know when he comes home that my plan is to go for a walk after dinner, he is more than willing to accomodate me, and even reminds me with a "Did you want to go for your walk now?" when everyone is fed. The fact is the my wise husband knows it is good for everyone if I get a little fresh air a few times a week. And I am sure it makes me a little more attractive when I have that glow about me.
Let me encourage you to put getting fit on your list as things that need to be done a few times a week. Walking is the most natural exercise, and is a great stress reliever too.