This is how i.dollars works:

•For every referral who buys a month-to-month membership or signs a one-year membership contract, you'll earn 10 i.dollars, or $10.00.

•For every referral who buys a standard i.d. card (12 day passes for $180), you'll earn 5 i.dollars, or $5.00.

•Your i.dollars will be loaded onto an i.d. card, which you can apply for buying anything at i.d. gym, from bottled water to personal training.

•If you refer six new members in a 12-month period, you'll receive a one-month free membership at i.d. gym, in addition to any i.dollars you've achieved.