Father's Day Gym Promotion: Father's Day is one of the most underused promotional windows for boutique gyms. Experience and self-improvement gifts have been displacing traditional Father's Day gifts for years, and a well-built gym offer fits exactly into that shift. Three offer structures work best: a dad-and-kid intro experience, a paid intro gift card from family members, and an annual membership gift with bonus value. Launch the campaign June 9 to 12 for full reach through