Always Together

 When some couples ride, one member has trouble keeping up with the other.

Here’s one way to solve that dilemma:

What Are They Doing?

 

Are they showing the joy of cycling?

Did they synchronize their moves to show how harmonious a couple they are?

Or are they riding fixed-gear bikes and have suddenly realized that they don't know how to stop without brakes?

How would you explain this image?