After his 20-year-old son died from deep vein thrombosis(DVT) resulting from playing video games in place for up to 12 hours a day, David Staniforth has done everything he can to raise awareness of the condition.
"The coroner said a clot formed in Chris' left calf before moving to his lungs.
Once there, it caused a fatal blockage, known as a pulmonary embolism.
Mr Staniforth said: 'After my research I saw there was no difference to Chris sitting at a desk on his Xbox and someone on a long-haul flight.
Sitting still is literally the danger zone. Chris loved to play and would stay up all night.
Millions of people worldwide are playing these games for hours, and there is a risk.'
While Mr Staniforth has no problem with games consoles, he wants to highlight the heightened risk of DVT associated with being immobile, and is in the process of setting up a website."