Mike...Mike...Mike,
Shoveling snow has been proven to be hazardous to to the health of men over 49 years of age (heart attack years)if not done properly...
The proper method I favor is the "spousal guilt" method...
Inform your wife that even though you are still capable of many forms of exercise (like fly casting & certain variations of the "mambo"

, the exertion of shoveling snow may lead to a cardiac episode...
Scientific research that I've conducted indicates that controlled snow shoveling is beneficial as exercise for females...to that end, in preparation for our retirement in an area prone to receiving precipitation in the form of snow, I have purchased a special snow shovel for mrs. pgw (one with a reduced capacity to suitably align with her physical musculature and, prevent over exertion from attempting to lift too much snow) and golf shoes (the spikes will prevent her from slipping on any ice during the shoveling process).
Enjoy tying your flies.
Paul