Vape machines are different than regular tobacco cigarettes, in the sense that they are used very differently. The style in which you use a vape is obviously similar to traditional smoking, however unlike regular smoking, you can continue to vape until you're satisfied with your nicotine intake, unlike finishing once the cigarette has finished. Coils are the heating elements inside an e-cigarette. These coils vaporise the e-liquid, and they need to be replaced regularly. Depending on the usage, these are normally replaced around once a week. The heating element can become less efficient the more the device is used. This is due to the build-up of carbon on the coil, which is produced by the e-liquid. To feel the benefits of swapping from traditional smoking, your nicotine level must be equal (or somewhat higher) to your previous tobacco cigarettes. E-Cigarettes are different to regular smoking which is why you must ensure your nicotine level whilst vaping is right for you. Making the switch can improve your health within weeks of doing so, and is proven to reduce the risk of heart attack and strokes. Whilst vaping isn't classed as good for you, it's most definitely safer than traditional smoking.