I think when some people talk about gardening, they are talking about walking around their nice (flat!) little garden space, maybe even in a skirt and picture hat, like ShadyLane's avatar, with hand snips, deadheading the roses.
When I talk about gardening, I am often talking about clambering up and down my hillside that is so steep sometimes I have to use all fours, manhandling heavy stuff up and down the hill (e.g. all the concrete blocks for the retaining walls). Last year I felled a big old tree of heaven (~40' tall and more than 12" diameter at the base). But then my chainsaw blade got dull and I couldn't get it sawed up. Took me a long time to get it together to get the chainsaw sharpened and then I lost the window of opportunity. So today, I was out there, standing on steep, rocky, uneven slope, with the chainsaw, cutting it up into 36-40 inch logs and hauling the logs up the hill. Some of the time to get to part of the tree and keep my balance, I had to wrap one arm around a standing tree, and do the chainsaw one handed. So I came back up dirty from head to toe, tired, and feeling wonderful! Cut some more honeysuckle down too while I was down there with my chain saw and 100' of extension cord.
Now that's my kind of yard work!