u/Austinkin117

I have been using A WFP for 3 years now, but this is the first year where I have been using it for pretty much every job. At the end of the day and especially the end of the week my shoulders burn and I'm worried I might overwork them and get injured. Also I am 28 and not super old so can imagine this gets worse as i get older. The biggest shoulder stress seems to come from the rinse when I need to keep the brush off the window to rinse down the glass. Is this just part of using a WFP or is there tips to help with the fatigue?

Thanks!