>>198At least a month between each trip. But you should honestly wait longer if you're using the same substance and want the trip to be different and meaningful next time. Personally I do it more often during summer, while giving it a break during the colder seasons. I literally worship the sun, gives my trips a pleasant vibe every damn time. And I'm ok with my experiences being similar during summer since I often just drop at music festivals and give in to a hedonistic melange of dancing and getting lost in sound.