Someone I work with posted this link:
One of the more interesting quotes from that article...
"As a boss, your energy has a disproportionate impact on those you lead, by virtue of your authority. Put bluntly, any time your behavior increases someone's anxiety — or prompts any negative emotions, for that matter — they're less likely to perform effectively.
The more positive your energy is, the more positive their energy is likely to be, and the better the likely outcome. "
If you are working under constant and continuous pressure to 'perform' no matter what your position or job, your manager may be making a short sighted mistake where your decision making may be compromised as a result.