Trading is very harmful for your health, there are many reasons. It can be very harmful for your eyes, as you spend several hours per day in front of your computer, if you are a trader then you have to spend even more time staring at the monitor screen. It is very important for newbie traders to know about it.
When you're into day trading and expect good return from the same in short term you need to wait for a longer time infront of the desktop, but I never intend to this. I prefer buying at the possible low price of the day, and then used to quote a selling price that that I can reach in a days time. If the targeted price is achieved the trade gets completed else it gets postponed and postponed. For me it's ok as I don't depend on the trading profit for living, but with those who prefer the same for living they need to spare infront of the desktop without which profiting is impossible.