Why am I so sore?

My wrist hurts, my elbows creak, my shoulder aches. I feel like I'm falling apart! I'm trying to decide if it's because of my dedicated exercising over the past few weeks, the two-weeks-in-a-row of skiing, the snow-shoveling project while Jim was out-of-town (that snow was wet and very heavy), or the fact that I'm just getting old. Maybe it's a combination of all of the above? I'm hoping to recuperate on the trip to California this week. Jim left to attend meetings in Roseville today. I'll be flying out to join him in a couple of days. I am really looking forward to strolls in the sunshine, temperatures in the 60s, sleeping in, eating out, with lots of time to read and explore. Californi here I come!