Here is some excercise I do during the week consiously and subconciously:
Walking around in school. estimated time: 30 minutes
Walking twice a week after school. Estimated time: 30 minutes
Carrying books around school all day. estimated weight: 2 lbs
Woodshop everyday. Takes a lot of energy to saw, carry, shpae, and sand wood.
On ABC days, I have gym. Estimated time: 40 minutes