Carbon monoxide detectors sound an alarm when they sense a certain amount of carbon monoxide in the air over time. Different types of alarms are triggered by different types of sensors. 1  Biomimetic sensor: A gel changes color when it absorbs carbon monoxide, and this color change triggers the alarm.
General Bad Days Similarly, some of the lethargy is simply as a result of reality. Having anxiety makes your day worse, and so there are many people that find they would rather sit in bed than deal with the anxieties of the day.
Some people experience the opposite - severe fatigue and lethargy that keeps them from doing much in their day to day life. Lethargy is an extremely common anxiety symptom, and unfortunately it's an example of a type of symptom that can often lead to the development of more anxiety.