SIR Fitness is based in southern California, with 13 franchise locations in Garden Grove, Huntington Beach, Fountain Valley, Tustin, San Clemente, Orange, Anaheim, Vista, Carmel Valley, Eastlake, and University Square. The Assistant Personal Training Manager (APTM) ensures that we deliver consistent, genuinely caring, and inspiring service superior to our competition through our respected and empowered personal training professionals.