This questions goes back to sales and self-promotion. What do you do to get new clients? Some people use social media to promote themselves while others find it more effective to do face-to-face marketing. Do you have business cards, your own website and an email marketing campaign? When you're at the gym do you make an effort to introduce yourself to new members and tell them about your services? Building a reputation for training that gives results is the first step. Next is making sure everyone knows about! Share a few techniques that have helped you increase your number of clients.