At the present condition as I am giving much more time in here (Steem Blockchain ) So I am spending quite a lot of time in front of the PC. 

Few problems that I have been noticing is that I am having problems in Sleeping due to the routine messed up But as it seems it is not because of the usage of the PC. 

And currently I am spending around 12 hours everyday in here and sometimes more even. 

I have not faced any issues till now over being in front of the PC yet.