Some other aspects to consider
The range of experiences elicited by cannabis can vary from bliss to panic to stupefying. I much prefer the bliss aspects.
Cannabis is unusual in its varying effects on our vascular-circulatory system. Some cannabis strains seem to act as a vasodilator and others as a vasoconstrictor. A vasoconstrictor is a substance that constricts blood vessels. It tends to elicit tension, excitement, anxiety, and even panic. A vasodilator is a substance that dilates blood vessels and tends to relax a person more easily into a blissful state. Therefore, I tend to prefer cannabis that seems to act as a vasodilator, simply not to the point of couch lock sedation.
Tinnitus and dyskinesia are common symptoms of a vasoconstrictor reaction. Tinnitus is ringing in the ears, and dyskinesia, in this instance, is usually felt as a tingling in the extremities, especially the little fingers, toes and ears. Another bad sign would be any form of tension headache or unwanted body load. If these symptoms occur regularly after indulging in a particular herb, the herb may be contributing to the sensation.
Do you think it is possible to accurately gauge vasodilation while exercising? As a serious weight trainer I use synthetic OTC bodybuilding supplements for vasodilation and it makes me wonder if I could use them as benchmarks in my selection process.