As said, relax ... let the 'bike do the work. Don't be rigid and 'as one' with the 'bike, let it move about under you. You'll look like George Formby 'On The Limit'
But what the heck ...
<iframe width="560" height="315" src="https://www.youtube.com/embed/ukCc3c6RVo4" frameborder="0" allowfullscreen></iframe>
But what the heck ...
<iframe width="560" height="315" src="https://www.youtube.com/embed/ukCc3c6RVo4" frameborder="0" allowfullscreen></iframe>