While reading this article about mountaineering boots I found following quote by Ian Nicholson quite interesting:
"When climbing in a double boot, bring the liner in your sleeping bag at night to warm them and slightly dry them, but don't leave them on your feet. It doesn't seem to make that much sense, but wearing them can make your feet quite cold, and just letting them dry in your bag makes them that much more pleasant to put on in the morning."
Emphasis by me and that is the point I am interested in. Did you made similar experiences? And if so, why is this the case?