1.   Bicycle riding exercises the leg muscles.

2.   But even more mysterious, why do so many people take such an avid interest in bicycle riding?

3.   Street lugeing and bicycle stunt riding will be front and center!

4.   The vocabulary is unlimited, defined in choreography that suggests everything from Balanchine to tap, gymnastics and bicycle riding.

5.   Then the research subjects engaged in a more vigorous regimen such as bicycle riding, knee-bending, step-up exercises and fast walking.

6.   There are narrow, squiggly lanes ideal for bicycle riding and other forms of exertion.