Pulsing heartbeat effect

1)Open up The pic you want to use. I'll be using this stock photo of some grungy model-->

2)Duplicate the layer and add a radial blur. Filter>Blur>Radial Blur. Use these settings-->

3)Your pic should look like this.-->

4)Jump to imageready. You can do that by clicking this icon on your toolbar-->

5)Hide the blurred layer by clicking the eye button on the left of it in your layers palette-->

6)Go to your animation frame palette and duplicate the frame.
7)Then unhide the blurred layer by clicking on the eye again.Frame 1 should now be your original image and frame 2 should be the blurred layer.-->

8)Now click the tween button in your animation palette.-->

9)Add these settings-->

10)You should now have 5 frames in your animation palette. Click the frame delay times at the bottom of each frame and set each one to 0.1

11)Press play and thats it!-->

DONT FORGET TO GO TO FILE>SAVE OPTIMIZED AS AND IT'LL SAVE IT AS A GIF

Credit Goes to benz812