changed rest video.

frontend/src/timer/components/Timer.tsx

@@ -111,7 +111,7 @@ const Timer = ({ training }: { training: ITraining }) => {
   const videoSrc =
     currentExercise && currentExercise.video
       ? currentExercise.video
-      : "/media/Pexels_Videos_2786540.mp4";
+      : "/media/block0.mp4";
   //console.log("current state:", currentExercise, state);
 
   return (