In many missions, I was taken to meet people at first view, impressive at work. Constantly moving, constantly trying to achieve several tasks at once, continuously working in emergency.
However, I meet other which seemed to have less energy. They demanded a time for reflection before answering a question, they attacked a job only after finishing the previous one. They did nothing in a hurry.
The first,are the followers of mobile phone, SMS throughout the day. They are specialists in oral instructions. Second, reserve times in the day to read and respond to emails. They always think before acting.
At first sight, it is believed that the first are more workers and more effective: at the end of the day they are much more tired than the second, which are rather calm, serene and ready to begin a new activity at home. Given their level of tiredness, they had to work a lot and so be very effective!