Getting high before going for a run

Here me out, I'm a guy who loves weed, and has been getting more and more into my runs this years. Sometime, about 10 minutes before setting off, I take a few tokes and I find myself more focussed, tuned in, and generally able to go for longer. Anyone tried this? Is there some science behind it? Appreciate we're not all stoners here, just interested to hear about people's experiences.