At more and more gyms across Tokyo, women's workout classes are beginning to resemble action-packed scenes from "Tomb Raider." Lara Croft, the students are not -- though the best could probably give her a run for her money. This is because the exercise programs today's women are signing up for are more upbeat and more aggressive than their aerobics predecessors, adding elements of contact sports for an intense workout -- and even some peace of mind.

Bodycombat is one such program. Originating in New Zealand, it was introduced to Japan in September last year by Konami Sports. Now, it is offered by 126 of the company's 151 fitness clubs and franchises, and it is popular with men as well as women.