chill out with friends & have drinks / have a nice dinner: I like the aperitivos in corso Como, I go sometimes with my friends. It's not far from where I live and the vibes are cool! "Gaia" gelato place near the university is also one of my fav spots to chill out (in all senses!) with friends.
feel active and immerse in nature: my friends and I love hiking: we usually get on a train or share a car and go hiking in the outskirts nearby. Destinations like Canzo, or the Swiss Alps are easily reachable for a day trip or a weekend.
your secret favourite spot in Milano: I like the Giardini Pubblici Indro Montanelli park near Porta Venezia!