If your work require you to be in front of your computer for long period of time, there is a high tendency that you will suffer from repetitive strain injury (RSI)
Repetitive Strain Injury happens as a result of placing your hand/body in an uncomfortable position (such as typing on the keyboard or sitting in an improper way) that leads to tissue damage or muscle strain.
To avoid or reduce the risk of RSI, it is advisable to take a frequent short break and perhaps, walk around or do some simple exercise to relax your muscle. However, being as busy as we are, there’s always a tendency to forget about taking a break when you are too tied up with your work. The only way out is to use a software to force/remind us to take a break when necessary.