We know what it's like. You ate your own body weight in turkey and Christmas pudding and just when you thought you were full, you reached for a mince pie. And then the After Eights.
If you're feeling sluggish it's time to get out and blow away those Christmas cobwebs with a stroll around one of our top country parks.
Here's a few suggestions to help you on your way.
Hyde Park is one of the most gorgeous parks in west London with acres of lovely nature to photograph and enjoy.
Why not sit by the Serpentine and watch the world go by this Boxing Day?
Or, if you're in the mood, here's all you need to know about Winter Wonderland including the internationally renowned Nutcracker on Ice at the Winter Palace and for the first time in the UK the world’s largest transportable rollercoaster, Munich Looping, takes off. The usual favourites are also back such as The Magical Ice Kingdom, outdoor ice skating, Zippo Circus and the Giant Observation Wheel. Winter Wonderland will be open until Monday, January 2, 10am to 10pm, including Boxing Day.
Hyde Park, Westminster , W2 2UH - 0300 061 2000
As a Botanical Garden, you won't find many places better than Kew Gardens for sheer variety and beauty of plants and flowers.
Boasting the world's largest and most diverse collection of living plants, head to the gardens to catch a stunning glimpse of the changing weather.
The Thames Path
Why not take a stroll or a jog down the path and enjoy the crisp, cold morning?
Richmond Park is the largest of all the Royal Parks in London... And the fallow deer will be more than happy to pose for a festive photo or two!
Richmond Park, Richmond , TW10 5HS - 0300 061 2200
The Mall in Westminster
Lined with neat trees and facing the picturesque Buckingham Palace, The Mall is definitely a spot to take your friends to this winter... You don't get much more quintessentially London than this!
With fallow deer roaming around and plenty of gorgeous trees, lakes and grassland, Bushy Park is a royal park to make sure to visit.
Take a stroll around the lake in the chilly air, and then walk up to Hampton Court to have a fun, seasonal day out with your family.
Bushy Park, Hampton Court Road, Hampton, TW12 2EJ - 0300 061 2250
It may sound morbid, but Brompton Cemetery is a truly beautiful place to visit, filled with historic monuments, trees and wildlife, as well as the stories of the fascinating people buried there.
Enjoy walking around and taking in the history.
Brompton Cemetery, Fulham Road, West Brompton, SW10 9UG - 020 7352 1201
Ruislip Woods National Nature Reserve is the biggest single area of woodland in Greater London, which makes the area perfect for taking long, chilly strolls, kicking up leaves, and taking gorgeous pictures.
Sculpture Park in Regent’s Park
Combine the fresh air this winter with culture and visit the Frieze Sculpture Park in Regent’s Park until January 8. There are sculptures from 19 different artists on display in the midst of the beautiful English gardens.