diff --git a/README.md b/README.md
index 2a2aaed..f32fcff 100644
--- a/README.md
+++ b/README.md
@@ -107,6 +107,10 @@ print(vmul(jnp.arange(4.0)))  # Array([ 1.,  4.,  7., 10.], dtype=float32)
 
 ### `bounded_while_loop`
 
+If you know a loop will terminate before `max_steps` steps then `bounded_while_loop` is better than a normal while loop.
+`bounded_while_loop` uses `jax.lax.scan` under the hood, enabling both forward-mode and backward-mode differentiation.
+Speed and efficiency are maintained by evaluating the termination condition and, when satisfied, switching to a no-op function so that, under `jax.jit`, the remaining scan steps execute a cheap no-op instead of re-running `cond_fn`/`body_fn`, even though all steps are still part of the compiled program.
+
 Simple loop over a scalar:
 
 ```python