New to Golds Classes If so, join us Monday nights at 7pm. Meet in the lobby area 5 minutes prior to the start of class. Please reserve a spot in this class by signing up with a sales person or a front desk person. You can also email the Group Exercise Director at jmcgrathgoldsgym.com. The class will last about 45 minutes and will give you great information on all of our programs and how to get started.