Does he know?

I have not told my husband about my running. I did not tell him that I bought a new pair of shoes.
I asked him to help me fix the treadmill because the console wasn't working. (I ended up fixing it myself). He has helped me fold laundry and has seen my workout clothes.
What do you think? Does he know? I'm sure he wouldn't have any idea what I am actually doing or what my goals are but do you think he has no clue that I've been working out? I'm not sure. He hasn't said anything and neither have I. It will be interesting to see how this plays out.