To clarify preworkout I use .15-.2 of a gram of extract smoked out of a quartz nail and water pipe. I use a similar amount in the evening. I no longer combust any flower and breath much easier because of it. I did use RSO an edible concentrate on the begining to get through the pain in the evening I was eating 150mg-200mg thc in a gelcap in the evening. Vape cartridges are an option but I've never found one I liked. It's fair to not I have a very high tolerance and most people would not know I was under the influence, most people could use far less.
Okay that's actually a pretty large quantity compared to what I consume and I don't want to imply any form of judgment.
I found that a vape pen with oil is okay but my favorite form is 10 mg edible before a workout. I particularly love it for trail runs and for weight lifting.
When I try the concentrate I found that it tended to irritate my lungs. Plus the additional potency of the edibles due to how THC breaks down in the digestive system is nice.