Got teaching job after service flying - coaching sport meant I put on 1 stone only. Stopped coaching when I got a management position; put on another 2 stone. Emigrated and am building my own 2 storey house by hand (slowly); lost 3 stone. There are no fat carpenters! Gardening is a good substitute (apparently).
Can recommend the Canadian Air Force exercises (google '5BX') for getting you back in shape. They do work for all ages, but note the sit-ups should now be crunches.
...and try to stay out of the bar Mon-Thu.
