As I have explained many times, Boston is a bike friendly city, as far as U.S. cities go. Particularly from neighborhoods where subway access is spotty, you can see a daily stream of bicyclists commuting or recreating. Add nice weather to the mix, and you see even more, and less clothing covering such magnificent specimens as the fellow to the left.
To the left, I was approaching from behind, thinking it was a shapely gal, with her bob hairdo mashed down by her helmet. But, I was mistaken: it was a hip-y thin-armed fellow with a full beard. No breasts showing under the tight tank top, so I am fairly certain it wasn't a bearded lady.