Can relate to all the comments, I will be 53 this year and for last 4 years I have wound window cleaning hard going. Especially during the winter, the aches start at back of my neck, shoulders,wrists, lower back, knees, ankles,feet. I do a handful of gutter jobs in winter and find the ladder work tough now, even 10 years ago, I was still fit. This is why in late 2018 I started the carpet cleaning business to try and get out of the window cleaning.