I used to love walking, I would walk or ride my bike anywhere and everywhere. My ex-husband stole my racing bike, he had already made it so I couldn't ride it anymore, he sold it for drugs. I had to stop walking so much when I started having trouble with my hips, but me and Boofus da Woofus still walked 2 miles every day, and I walked all evening at work getting vehicles to work on from the lot, and all evening inside the shop working of the vehicles.
Then I got hurt at work and my boss told me I couldn't walk in the yard, or a block down the street to catch a ride back to the shop. And after the surgeries that were supposed to "fix" my knee I've been in too much pain to do more than the minimum. If I do a LOT of gas station shops my knees and hips loosen up a bit and I feel better and can do a bit more, but every year that gets less and less.
It's possible, if I could do a certain amount of work on a regular basis, like 3 or 4 days per week, I could gradually get back to being able to do all but the largest gas stations that require pics of each pump. But the bonuses don't come so quickly anymore, and the work just isn't consistent enough. I'm to the point now where if I have to do a big gas station I need help, or I need to have my walker. I choose help more often than not, even though the walker is in the car.