Here's some healthy advice I came across suggesting that walking for an extra two minutes each hour may help prolong life.
This is what I'm trying. I have a small kitchen timer which I set for 1 hour. When it goes off I set it for 2 minutes and walk around the rooms in my house.
Walking Extra Two minutes Each Hour May Offset Hazards Of Sitting Too Long : Health : Headlines & Global News
Walking an extra two minutes each hour may offset hazards of sitting too long -- ScienceDaily