<prompt> Human: Hi - Im seriously considering joining Planet Fitness and I saw something on their packages page thing that worried me - the payment must be taken from a checking account. My immediate thought was that people have used prepaid Visa cards or some such thing in the past and the gym hasnt been able to just charge their cards. But I as a consumer might want to do that, not to screw the gym over, but so if I ever do cancel the membership, they cant just...keep charging me endlessly?! 1. Why would a gym do something like this?2. Is there any way around it?3. What steps can I take to protect myself financially?4. What options do I have in the event of the worst happening - I join, I leave, they keep charging me and wont let up? thanks!  <response>: They do that because youll likely be signing a contract. Sign up for a gym thats month to month 