normal if...? ...they stay at their computers for too long?
It's like....they can no longer survive for more than an hour without being at their computer. How does this happen and why do they experience the symptoms I described?
Because they need a life and need to get outside.
Humans are connected to nature, and it is imperative to get vitamin D from the sun, fresh air, and interact with humans.
Prolonged computer use is bad for your overrall health.