On days of exhaustion, it can be more difficult to keep your attention on the whole problem. Then a simple request can act as additional pressure, and a quick response as a way to complete the request as soon as possible.
In the team, it is worth leaving room to describe such a situation without the need for the person to justify themselves. Is the decision urgent? Can someone else review it? Should the amount of work preceding it be changed?
Rest is no substitute for dealing with bad conditions. If the same people are constantly working to the point of exhaustion, the question is no longer just how the individual will recover. Management should review the schedule, expectations, and support it provides.
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