It is extremely important for the trader to be in good physical shap because it is closely related to cogitive abilities, concentraition and the process of making decisions. Traders spending all their time in front of the monitors are more likely to make mistakes while healthy trader could stay focused longer and think faster. So, each trader needs both rest and physical activity, and it is good idea to connect these two things. It is necessary to dedicate time to making exercises, walking and, if possible - swimming. Many newbie traders think that they should work as much, as possible, but it is a great mistake. If they will spend too much time working, their productivity will decrease, so they will need to spend more and more time to make the same scope of work. Professionals always shedule some time for physical training (especially for cardio training) because they understand it would help them to manege with psychological pressure and overloads they face.
Another important aspect traders should pay attention for is their trading workplace. It should be comfortable enough for long working days othervise it would be harmful for their health. For example, monitors should be placed straight in front of the eyes to avoid problems with the neck. You can easily find various researches dedicated to the comfortable and healthy workplaces within the Internet because the humanity already faced this problem.