The referral program applies to anyone who purchases the Certified Personal Trainer (CPT), Corrective Exercise Specialization (CES), or Performance Enhancement Specialization (PES). The referred customer must order by phone and mention their reference at time of purchase. Please allow 28 days for credit to appear in your account. Credit expires 1 year from date of initial purchase. An account credit must be used in a single transaction. Maximum $600 referral credit available per calendar year.