Cannabis oil (rso) effect on workout?

I noticed when I was dosing with about 200 mg rso after a workout, I wasnt sore at all the next day. Wondering if anyone knows the science behind this and if the oil is effecting muscle gains. I stopped dosing for 2 days and was hella sore today after yesterdays workout n it got me thinkin...

Cannabis has anti inflammatory effects, I heard.
I ran for an hour yesterday after taking 6 weeks off. Stiff and sore and soon to be medicated.