Poison is a good physical game to get people moving. It's also not as dangerous as it sounds!
Get everyone in the group to make a circle and hold hands. In the middle, place a chair (or similar object).
The concept is simple - if you touch the chair (which is "poisonous"), you're out. It doesn't take long before one side of the circle will try and pull the other side of the circle onto the chair.
Gradually as people are eliminated, the circle will get smaller and smaller. The last person standing is the winner!
Obviously given this is a physical game, you need to keep an eye on safety here to make sure people do not get hurt.