If the man at the top of Chess can feel like that at times, and express it, he's able to help a lot of others understand that it's normal when it occurs. He played well despite. Chess might require periods of rest for the mind to relax.
I think he's a cheater. Because, Unless you're a Super GM, you cannot play against Magnus like that. It seems if he had enough time, he would have beaten Carlsen. Shame on him.
Two classic games. He kept his composure throughout the trials of the second game. Gameplay superb, and I'm especially grateful for the shared thoughts throughout. With thanks.