So, what is the purpose of this? I gather it's a safety feature in case someone forgets to turn it off after they vape. What's behind the 3minutes or 5minutes? Like, is that the length of time it generally takes most people to finish the bowl? Or is the herb inside used up / vaped-out after 3-5mins? Should i not be vaping my herb for more than 5 minutes? I'm curious how those specific times were chosen. Also, is it safe to keep turning the heat back on every 3-5 mins every time it automatically starts to cool down?

Thanks!

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The Yocan Vane features two heating mode for difference vape style.
Which one heat mode is right for you? It depends on your dry herb type, if your material need longer heating time, just choose 5 min mode.
You can use it every 3-5 min every time, but please do NOT overheating your device.