Outdoors absolutely! If I stay inside for more than 2 days I Lose My Mind. I need to bask in the sun and feel the breeze on my skin. Even if it’s something as mundane as going on a 20 minute walk it helps because it exacerbates my depression if I don’t leave my house. Going out also gives me an excuse to plan hangouts with my friends because I am extraverted to a fault !!