diff --git a/bar.go b/bar.go
index 22a22ee..9d114cd 100644
--- a/bar.go
+++ b/bar.go
@@ -464,6 +464,7 @@
 		for {
 			select {
 			case refreshCh <- time.Now():
+				time.Sleep(10 * time.Millisecond)
 			case <-b.done:
 				return
 			}