Musicians generally warm up before a performance. No matter how
accomplished or talented they are, time away is a cooling-off period that
needs to be reversed. I was at a concert recently where it was obvious that
they started without the proper warm-up. They didn't make mistakes, but
they didn't sound *good.*

In wood turning, it may not matter during the roughing and preliminary
shaping, and I had never thought about this before, but I now think it is a
bad idea to do the finishing cuts at the start of a work session.