"MEMBER'S RIGHT TO CANCEL
If you wish to cancel this contract, you may cancel by delivering or mailing a written notice to the club. To prove that you canceled, it is recommended that you send the notice by certified mail. The notice shall state that you do not wish to be bound by the contract and shall be delivered or mailed before 12 midnight of the third business day after you sign this contract. The notice shall be delivered or mailed to: (insert name and mailing address of club). If you cancel, the club will return, within 10 days of the date on which you give notice of cancellation, a total refund. It is recommended that you mail the notice of cancellation by certified mail, return receipt requested; check with your post office as to the time when you will be able to mail a certified letter. Be sure to keep a photocopy of the notice of cancellation which you mail."
Fla. Stat. § 559.3904