You will want to eat more then usual and you gain weight.
You can try to put your self into a calm mode and just relax and breath Hope this helps :)
Being sedentary means you don't move around (stay in one place).
People who are sedentary could play video games at their computer all of the time, which means they stay up late.
Staying up late leads to sleep deprivation.
Thus, video gamers could have sleep deprivation.