It only does this in certain cases. It can also negatively impact those who wouldn't want to do it. You have to factor in a cost to all of these things - even f

It only does this in certain cases. It can also negatively impact those who wouldn't want to do it. You have to factor in a cost to all of these things - even for something as simple as smiling. For smiling most of the cost is mental, but it's still there. I feel like there's a lack of explanation on "effort" that a person can spend. Like why a person will be able to do some amount of work but then get incredibly bogged down and not feel like doing more, even though they aren't really "tired".