You’ve seen them around. In the metal wall containers in subway stations, in malls and community centres…AEDs are everywhere. Why? Because they work. When your heart needs it, along with effective CPR, an AED can save your life by kickstarting your heart back to normal. To understand how, you have to know a bit about how your heart works. Your Heart is a Muscle It’s about the size of your fist and is in the upper left side of your chest (just off the centre). And your heart has an incredibly important function. It pumps blood to all areas of …