Existing standard members only; business memberships are not eligible. For each person you refer who becomes a member, we will add 3 months to your current membership term up to a maximum of 12 additional months. Each person you refer who becomes a member will receive 3 months added to their initial term. Alaska and Indiana residents are limited to 1 year memberships so they are not eligible for the referral program. California members have a 2-referral max (6 month add-on to current term). Referrals must be new enrollments. Gift memberships are not eligible for referral credit. Standard Terms and Conditions apply.