Knowledge work like this is not unlike a muscle. If you exercise it to the limit, you'll fatigue and need to take a rest for 1 or more days. If you keep doing i

Knowledge work like this is not unlike a muscle. If you exercise it to the limit, you'll fatigue and need to take a rest for 1 or more days. If you keep doing it you'll become stronger over time. But don't neglect your need to rest, it's not abnormal to need a rest after doing a lot of knowledge work. I tap out after a couple hours of meetings and doing research/coding/testing/implementing too. More meetings == more fatigue, it's draining.