I love that there's a museum dedicated to American art, founded at a time when American artists were underappreciated. The exhibitions are curated with a broad but discerning eye, and the architecture is spectacular. In my experience it's typically much quieter than the obvious choices like the Met and the MoMA - although both are remarkable, there's something I love about the scale and style of the Whitney.
A spin around the park on a bike makes me feel good. One lap is about 6.13 miles. I've trained here for longer rides (including this London to Paris ride on a track bike that was 86 miles one day, rest on the second day, and 136 miles on the third day). I've sat there on a Sunday afternoon and have done as many as 10 laps (with rests in between). I switch in-between my carbon road bike and my steel track bike.
My favorite neighborhood fancy chinese spot. Quality soup dumplings (it's obligatory to get an order). Mock eel (mushrooms), ants climbing a tree (noodles), salt & pepper fry (fresh daily), and mu shu duck are some of the go-tos. It's spicy and filling—worth a night of feasting.