>5km every day
I walk about 6-12 miles every day. 3 miles is baby shit.
I would recommend something like meditation, or music, long before I ever recommended drugs. Marijuana is really fucking awesome. I can't attest to psychedelics.
But if you want marijuana, you need to have things in your life that you can fall back on when you start to think something isn't worth it. Like, you need a few things to keep your mind fixated on working towards. Like, a Spartan Race, grades and schooling, internships, work, cooking, learning about mechanics or something - you've already got exercise going for you, and if you've got the body to show it, then you've made a very, VERY large success in life that people commonly take for granted (in a society where luxury and commodity breed a lazy, inactive population norm).
If you have a life, with some interests and hobbies here and there, then experimenting with recreational drugs is hardly going to have a negative impact on your life when you look at it. Just try to avoid comparing yourself to other people too often, like thinking, "If I had what they had…" and "I wish I was as cool as them…". Don't sell yourself short. Have a little faith or confidence in your abilities. And drugs will have an immediate, applicable use instead of causing a long-lasting dependency to someone who just can't quite satisfy himself, and is never happy.
Recreational use is using it as a tool to enhance, alter, or tinker, etc.. Medical use is using these things for personal, biological and psychological applications. And really, for either, you need to be absolutely certain that's why you're using it. Don't go abusing psychedelics thinking that's the only way to understand the universe and yourself if you just have a problem with measuring and criticizing yourself. And don't go abusing anything for a self-prescription to something that might have a solution you just need to come to terms with rather than using drugs as a cure-all potion. It's important to be able to solve your own problems first, like washing your hands and avoiding contact with sick people instead of staying in your room and taking two allergy pills in the morning and night with cold and flu medicine. Just play it smart dude. Don't let it be a phase, and use it as a reward if you're using it recreationally, still keeping your goals in sight.