Knee pads saved my knees during a full brake service
Always put off brake jobs. My knees would be sore for a week. Saw a comment here about using knee pads. Got a basic set for under fifteen bucks. Did all four brakes on my old sedan last Saturday. Knees felt cushioned the whole time. No lingering pain at all. Finished the job in one afternoon. Felt proud and saved maybe three hundred dollars. Such a simple fix made a huge difference.
Try foam pads instead of gel next time, they spread your weight out better on concrete floors. I did a full day replacing breakers in a basement last week and my knees felt fine. The cheap gardening ones get squished flat after an hour.