Senior Services at Memorial Park Community Center, 510 Bert St., will begin Catch the Wave Series Circuit and More classes from 8:30-9:30 a.m. This four-week series will include circuit, interval and cardiovascular activities using a variety of equipment to improve health. This class is for anyone age 50 or older who has been exercising. Cost is $2 per class, and registration is not necessary. Participants will need to sign in and pay at the Memorial Park Community Center front desk before the start of each class. For more information, please call (423) 434-6237.