I frequently do 6 mile walks with my dog, 8 miles would only be about 3 hours. Considering how much time people spend planted in front of a TV each day on average that shouldn't be that hard to hit. Tell you what, have the corpos give me an extra 1.5hrs each day and I'll give up 1.5hrs of TV and then we'll have enough for that 8 miles.
We really need to take back our time from the exploitation class. A lot of problems go away if you work fewer hours a week, but there exist very few jobs that will pay anywhere near a livable wage for that. Like, I could easily survive on half my income if only someone would give me back half my time for it, but that just isn't an option.