The Leventhal-Sidman Jewish Community Center (333 Nahanton Street) in Newton will offer an eight-week beginner level personal training class on Wednesdays, beginning June 29, from 6-7am and from 7-8am. Participants will learn proper form for various exercises and why each exercise is important to one’s overall conditioning. Class includes strength training, core work for abdominals, flexibility and stretching. Cost is $168. Register at www.bostonjcc.org/register. An advanced level class will be offered on Fridays, July 1-August 26, from 6-7am and from 7-8am. The JCC is open to all. For more information, contact 617-558-6459 or fitness@jccgb.org.