When your membership is close to expiring, you will be sent an email 7 days before the expiration date reminding you. The email will contain a unique link to your renewal options.
You will also be able to see your renewal options anytime on your membership detail page.
You will then see a list of renewal options. Pick one!
Note. The membership will always start the day after your current membership expires. If you're renewing a monthly membership, the payment won't be taken until the start date, however for class packs and prepaid memberships you will be billed immediately.