since body impact is significantly reduced in hydro exercises,  it is a very popular sport amongst expecting mothers - many classes in rio de janeiro are available for pregnant moms to exercise in a relaxing environment with little to no risk of injury or stress.

an extensive list of hydrogyms in rio de janeiro is available here - a variety of locations offer a number of underwater programs and exercises.

companhia athletica (cia athletica), a chain of gyms in brasil, introduced the concept of the ‘complete gym', offering a wide range of activities and equipment for everyone - the gym in rio de janeiro is located in barra da tijuca and is open every day of the week.