I have a physician who is working in our ER for almost 20 years. Every time I see him, he is agile like a tiger. Since I am here I always see his sleeves folded. Sometimes it looks odd with a good dress shirt and an attractive tie.
One day I asked him about his habit of folded sleeves. He laughed and said: "As soon as I enter the ER, I fold my sleeves. This tells my brain: Let's start!"* - and I stay jovial, active and most importantly humorous - an essential skill in this massive stressful environment".
In last 2 weeks I tried his trick - and indeed I loved it!
* As we say in Urdu/Hindi: "Chal guru, ho ja shuru"