diff --git a/client.go b/client.go
index f40d241..0667a51 100644
--- a/client.go
+++ b/client.go
@@ -218,6 +218,15 @@ func getBodyReaderAndContentLength(rawBody interface{}) (ReaderFunc, int64, erro
 		}
 		contentLength = int64(len(buf))
 
+	// If a regular string, we can read it over and over via new
+	// readers
+	case string:
+		buf := body
+		bodyReader = func() (io.Reader, error) {
+			return strings.NewReader(buf), nil
+		}
+		contentLength = int64(len(buf))
+
 	// If a bytes.Buffer we can read the underlying byte slice over and
 	// over
 	case *bytes.Buffer:
diff --git a/client_test.go b/client_test.go
index b3f8e6d..bcfc0d0 100644
--- a/client_test.go
+++ b/client_test.go
@@ -127,6 +127,8 @@ func TestClient_Do(t *testing.T) {
 	// io.ReadSeeker
 	testClientDo(t, strings.NewReader(string(testBytes)))
 	// io.Reader
+	testClientDo(t, string(testBytes))
+	// io.Reader
 	testClientDo(t, &custReader{})
 }