When we play Xbox, we take regular breaks (she smokes, I just get up and walk around; fix a drink or whatever). It's not because of this, simply take breaks because of the need to move. I guess that tingle in your legs is telling you to do something.
The family of a budding computer programmer have on Saturday launched a campaign to raise awareness about the health risks of playing online computer games after their son died following a marathon session on his Xbox.
From 3tkA post-mortem revealed that 20-year-old Chris Staniforth -- who was offered a place to study Game Design at Leicester University -- was killed by a pulmonary embolism, which can occur if someone sits in the same position for several hours.Deep vein thrombosis normally affects passengers on long-haul flights, but medical experts fear youngsters who spend hours glued to their consoles might also be at risk and have urged them to take regular breaks.(link)
I hope that the campaign the parents are starting will help; but ultimately it will be up to the gamers (and their parents) to fix this problem (that shouldn't exist).