diff --git a/Doc/library/asyncio-task.rst b/Doc/library/asyncio-task.rst
index 45e5843..1ca1b4a 100644
--- a/Doc/library/asyncio-task.rst
+++ b/Doc/library/asyncio-task.rst
@@ -293,6 +293,10 @@
    ``sleep()`` always suspends the current task, allowing other tasks
    to run.
 
+   Setting the delay to 0 provides an optimized path to allow other
+   tasks to run. This can be used by long-running functions to avoid
+   blocking the event loop for the full duration of the function call.
+
    .. _asyncio_example_sleep:
 
    Example of coroutine displaying the current date every second