Pranab's cat nap

What is it that gives Finance Minister Pranab Mukherjee seemingly inexhaustible energy at 73? He wakes up at 6am to do his puja but rarely goes to bed before 1am. He shared the secret recently — Sitaram Yechury once advised him to take a break any time during the day, “especially when you think you are on the brink of collapse”. Mukherjee says the advice has worked. When he feels he can’t stand up any more, he retires for about 60 minutes for a cat nap in an ante room in his office.