Try ice skating for a festive winter workout with friends or family.
Take a run or a walk around your local area and hand deliver your Christmas cards to neighbours and friends who live locally.
If you are Christmas shopping in department stores take the stairs rather than the escalator.
Take a Christmas walk or jog with friends and family to look at Christmas lights where you live.
If you are short on time go for quality over quantity. Try interval training or swap your normal strength workout for a circuit. By working different muscles groups you can do exercises back to back for an effective and efficient workout.