I normally smoke my pipe once or twice a day,,if I'm lighting bowl after bowl it is because I'm stressed or angry and I'm trying to start a fire.But honestly,
I will usually wait an hour or so before lighting another bowl,so it just depends on what pipe calls to me at the time.I like my briars but have developed an
appreciation for my cob.And my Meers are for when I'm just showing off...

So where I can't answer your question, if it worries you switch hit between your briar and a cob,save the "Good Stuff" for your briar.