You may find it impossible to work without one but the computer may be doing more harm than good. Here's how..

Affects Your Weight:
Today's desk jobs have prompted a sedentary lifestyle, which has an adverse effect on our health. Research conducted suggests that sitting at a desk for six hr. every day doubles the probability of being overweight and obese people face higher risk of heart disease, diabetes, stroke and hypertension.

Solution: Ideally, you should be hitting the gym regularly but if you feel you are extremely pressed for time, seek physical exercise from household activities. Take a walk instead of jumping into rickshaw for short distance, ect..
Dieting can help but dieting without exercising is no good.

Strains Your Eyes
When we concentrate on the screen, we tend to blink a lot lesser than we normally would. Less Blinking reduces the lubrication in the eyes. Your computer screen has automatic refresh intervals and while you may not realise it consciously, It does register with your eyes and that's the case with both, LCD and CRT monitors. Moreover, our eyes aren't designed to concentrate on something which is at such a short distance. Studies show that our eyes perform best when looking at something 20 feet away or more. This results in added stress for your eyes.

Sloution: For every hr. that you spend on your computer, take a five minute break. Look elsewhere and focus on something that's far away. Also, make a conscious attempt to blink. Occasionally, eye drops of rose water will help.

Poor Circulation
The cause and effect in this case is similar to taking in this hour flights wherein people complain of blood clot formation in their legs which are often known to often move to the lungs. It can happen to computer users as well, albeit the chances are not that high In 2003, a man was reported to have developed (DVT) after sitting for 18 hours at his PC. That's certainly a long stretch but not impossible.

Sloution: Whenever you feel soreness or tightness in your legs, do some light exercises and get the blood flowing.