>>917000Getting /fit/ would be a good start. Walk your city park... for a few hours. Stairs are better. Can you do 50 pushups?
No need to join a gym if doing above.
Once you can walk flat and level with some stairs mixed in, hit a trail.
Bring water, jacket, flashlight, cell phn and remember where you parked!
You might hate it, but you'll be better off than sitting on the couch watching Dancing with the Stars.