Many people in EA value personal productivity highly, and make it a goal to complete as many tasks on their to-do list as possible in a day. Some people (myself included, in the past) seem to tie up their feeling of self-worth with how productive they felt that day.
I think that increased productivity should mainly be used to reduce the amount of time we work each day, and not to get more things done. To live a truly fulfilled life we need more unstructured, unproductive time when we can be ourselves and do the things that we find inherently valuable and enjoyable.
Here are some things that I find valuable in themselves, and not particularly productive:
Running along a river or canal in the morning
Reading a history book in a café
Listen to classical music on the radio
Prepare an elaborate dinner for my girlfriend
Try all the different types of cheese from my local shop
Thanks for your comments Aaron and Lukas. From my own experience, I have definitely encountered more people with an always-working mentality within EA than outside it. Anectodally, almost all the people (~ 10) I have met who seriously consider meal replacements as adequate alternatives to home cooked food have been EAs. This might be an inverse causal effect (ambitious people might like the EA concept more than others), but it is still problematic if people feel the need to constantly optimize themselves and work harder due to the social pressure within EA.