It isn't just looking, but seeing if something unliked by you is coming towards you

Of the three potential means (carriage on the body and legs, regurgitation and defecation) by which houseflies can transmit pathogens, one involves passage through the gut. During passage through the housefly, pathogens may replicate within the gut.

And ye that on the sands with printless foot / Do chase the ebbing Neptune[…]

Cycling has created the phenomenon of the MAMIL—Middle-Aged Men In Lycra—because it's enjoyable, it's accessible and it's easy to take up. All you need to know is how to ride a bike.