I don't know - seems like being fat is what actually kills people, not sitting. I sit all the damn time but I have like 0% body fat. No clogged arteries for me thx. Emphysema looks possible though.
Sitting at 135° means I'll fall asleep or at least be less concentrated on my work.
Therefore I will not be well perceived on my company as I work less
I will not get any promotion or salary raise
Which means I won't be able to subscribe to a good healthcare system, will need to eat at McDonalds instead of eating nice food, will have to work after hours instead of exercising or meeting friends, which in turn leads me into depression.
Under such condition I'm seriously degrading my health which would lead me to an early death.