Workplace does not really mean professional 'office', you study area is also your work place.
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1.
Gluing yourself to the seat. 
For those of you who work in an office environment, sitting behind a desk and staring at a computer screen likely makes up the bulk of yourday. The stress and demands of the job keep you focused only on your work and not on your physical well-being. This can lead to 40 hours of poor health habits each week. But with just a few adjustments, you can break the bad routine and be healthy at work.
2.
Messy Workplace.
An unkempt work area can cause stress and lead to inefficiency. Furthermore, your desk, phone, and computer are notorious for harboring germs. Once each week, clean your workspace with antibacterial wipes. Organize your desk in a way that minimizes strain on your body, and keep things in their place. If you need help, look around the office at coworkers’ desks, and ask them for tips.
3.
Poor Posture
You probably spend more time at your desk than any place other than your bed at home. So when you’re sitting in front it, it’s important to do it properly. Adjust your chair height so that your feet are flat on the floor and your knees are at a 90-degree angle. Adjust your computer screen so that your eyes are even with the top edge, and angle the screen so it’s tilted slightly upward toward your eyes. Your elbows should also be at a right angle when typing on your keyboard.
4.
Staying Put. 
Even if you sit with perfect posture, you shouldn’t do it for an extended period of time. Your body and mind will fall asleep, much like when you skip a meal. Once per hour, you should get up for a walk or a stretch.This will wake you up and get the blood flowing through your body (and your brain). Take every opportunity to get away from your desk. Instead of calling a coworker or sending an email, walk across the office to deliver the message in person.
5.
Gossiping. - Bad!
Drama in the workplace not only hinders productivity, it can also affect office morale and cause stress and psychological problems for those involved. Try to avoid known gossips in the office, and if you do come across personal information about a coworker, keep it to yourself. If you are out with colleagues for a night on a town, keep any potentially embarrassing stories out of the work environment. What happens outside the office should stay out of the office.
