This study aimed to identify the timing and the effects of 12-week Zumba lessons on some anthropometric parameters among women and men. 21 candidates (11) women mean age =53.72 Y, (10) men mean age = 48.63 participated in a 12-weeks Zumba lessons (1 hour, 3 times per week). A pre-test was done before the lessons, followed by during (after 4 w - after 8w) and followed by a post-test assessment (after 12 weeks). All variables were analyzed by Body Composition analyzer TANITA BC- 780 A. Analysis was done using Wilcoxon Test. The results showed significant level of improvement (p