I was at my local vape shop today and some guy said you should wait 30 seconds between vapes to let the coil cool down? True or false? I noticed I get more puffs out of a tank the first few tanks and then it drops considerably. The guy was saying its due to chain vaping because the coil was getting hotter. I'll take a few puffs with less then 30 seconds in between and then have at least a minute break in between those. Any tips or advice is greatly appreciated.