West Hartford – “Fitness Frenzy Day,” enjoy the JCC’s fitness center, indoor pool, group exercise classes; open gym for basketball; Super Hero Fitness and activities in Coolfit youth center for kids; 8 a.m. – 4 p.m.; Mandell JCC, 335 Bloomfield Ave., (860) 236-4571, www.mandelljcc.org/frenzy. FREE