Burn more calories while high?

[melodious fellow]

Sorry, but the amount of calories a body burns is directly correlated to that person's metabolic rate, not his heart rate.

Cardiovascular exercise, by working the large muscle groups and getting the heart muscle pumping, helps burn calories by building more muscle tissue, which is metabolically more active than fat, and by its contribution to increasing the rate at which the body uses calories. That's the metabolic rate. You can read more about it here.

Of course, of course. Basal metabolism is the largest determinant of caloric usage and usually burns more calories than any activity we engage in.

However, I was assuming the person asking the question was aware of this and was inquiring beyond just basal metabolism.

Personally, cannabis makes me want to eat and sleep, repeat cycle, definitely outweighing the slight increase in heart rate's effects on caloric usage.

cannabis is helping me try to gain weight ; )

Patient, that must be some killer bud to keep you high for a 17 miles run, perhaps endorphins and cannabinoids potentiate each other's effects!