(b) Cyclists do it......

[alecstilleyedye]

careless cyclists do it in the gutter without protection

 

[OldCobblers]

at a cadence of 75 times a minute...

 

[Cheddar George]

..... despite the wife moaning that it takes up all the free time at the weekend.

 

[yenrod]

..powerfully !

 

[col]

With extra effort on the way up

 

[Ianj5]

Feet forward, another recumbent rider