Sleep has restorative properties, but the mechanisms remain largely unknown. A study in Drosophila melanogaster reveals that glia dynamically monitor metabolic changes in the brain that accumulate from effortful behavior, triggering the need for rest and sleep.
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Kirszenblat, L., van Swinderen, B. A basic role for glia in sleep homeostasis. Nat Neurosci 28, 1118–1120 (2025). https://doi.org/10.1038/s41593-025-01963-w
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DOI: https://doi.org/10.1038/s41593-025-01963-w