Over the years I wore out two manual treadmills (NordicTrak) by wearing grooves in the plate under the belt.

Then I went with ellipticals, and wore two of them out.

So now I walk up and down my dead-end street. 15 complete circuits = 3 miles and 20 circuits = 4 miles. I do at least 3 miles per day and often 4 with one day off per week.

Now I just wear out shoes. I haven't managed to wear grooves in the street yet

I also have a couple of wrist weights but I don't use them as much as I should. It gets hot and sweaty and they become uncomfortable.

I've never liked gyms. I guess it reminds me too much of Phys-Ed classes in school

Bob