Rainbow over Calton Hill

My understudy's understudy blipped this rainbow for me today. He says that he is speechless and honoured with the accolade.

Translation: Mr hazelh and my friend J took this picture on their way home from some maths lectures on chaos theory at the University of Edinburgh this afternoon.

Exercise today: morning loops in 28'04", sit-ups and weights. (No walking to work. The pouring rain put me off.)