Here is something interested that California Superbike School posted on their Facebook page. Have a look at the coach's left hand then to the next image for a close up view.

Once you've put the bike on line, make sure there is no tension on the handlebars. Photo: @etechphoto

California Superbike School coach with relaxed hand on the handlebars

close up of relaxed grip on the handlebars

When you ride do you think you're as relaxed as the coach pictured or do you still carry tension in the handlebars?