How do you use the word "lethargy" in a sentence?

Here are real-life examples of using "lethargy": Lethargy is a common symptom of that disease.

Lethargy

/lˈɛθərdʒi/

Definition

(noun) A state of extreme torpor, sopor or apathy, especially with lack of emotion, energy or enthusiasm; (loosely) sluggishness, laziness.

Sentence Examples

Lethargy is a common symptom of that disease.

CEFR Practice Quiz

A lack of iron in the diet can often lead to a feeling of ____ and a general lack of energy for everyday tasks.