Tick anything you already have, in any order. Quests unlock once this is done.
An outdoor gym, a park frame, or a doorway bar at home. Everything else is floor, so this is the only thing you genuinely have to sort out.
Find an outdoor gymOne thing left above. Quests are real things you go and do, so they only make sense once you have what you need.
First one waiting: Do a proper push-up and squat