When you have a long-standing relationship with a client and if the client is usually very reliable, the occasional miss at slough gym is easier to swallow. But some clients have no respect for your time or your carefully planned schedule. Some clients continue to miss and reschedule fitness appointments. Others continually bombard you with calls, questions, and complaints. Supposedly you spend 80% of your time with 20% of your clients. You don’t need that anxiety in your fitness business.