Yesterday, I had to install the underlayment for tile that I'm laying today in my master bedroom. 210 sq ft of wonderboard, 15 sheets, nearly 800 screws. Took me 8 hours... Today, I need to start laying the tile and I am in pain! My whole body hurts; back is sore, triceps are sore, knees hurt, and my butt hurts... Getting old sucks! I feel like I did when I was 25 after I did a full day of hunting, covering 10 miles of mountainous terrain with a pack... 43, fat, desk warrior and 8 hours of physical labor is not a good combination... Any other older weekend warriors here that are amazed at how out of shape you are?