Yesterday, I was told that by a fellow coworker that when it comes to girls, I am "too intimidating"

As of late I've been swallowing the red pill: hitting the gym three times a week, reading up on the literature (there is still much to be read), working towards my goal-- in essence, taking care of myself and taking care of business.

This was not the first time I was told (by a woman) that I was too intimidating. I admit I carry a very serious facial expression, but I am also very charismatic, and enjoy laughing with my peers.

So, I ask you for your perspective. What do you think they mean by "too intimidating" ? How can I adjust this to increase my chances of bagging more women?