I arrived in Medellín on a Saturday night and the liveliness in the streets on Sunday morning was refreshing. I was staying right off of Avenida El Poblado (San Fernando Plaza Hotel) and it turns out every Sunday morning until 1PM half of the avenue is shut down so locals can walk, jog or ride their bike. This is a great opportunity to rent a bicycle along the streets near Parque de El Poblado or San Fernando Plaza and experience this event, Ciclovía, the way the locals in El Poblado, Medellín do.
If you’ll be in Medellín on a Sunday, I also recommend planning to do things open 24 hours (graffiti streets, Mirador de las palmas, etc.) or tours that you can schedule in advance. When I was looking into the best places for lunch I immediately noticed that there were very few local restaurants open; after asking a friend and doing some of my own research I realized Sunday is the only day of the week most people in Medellín have off so few restaurants and even fewer different establishments are open.
Fun Fact: The average business hours in Medellín range from as early as 7AM to as late as 5:30PM with a 1 hour lunch break, many people also work half days on Saturday with a 2 hour lunch break on weekdays.