First on my list are heart-healthy cardiovascular activities. Finding a type of cardiovascular activity that you two can do together is actually one of the simpler activities to adapt. For instance, you could go on a bike ride (just not always on a bike built for two). There are all kinds of accessible bikes, from handcycles to recumbent leg bikes. Other options could be to go swimming or engage in some other type of pool activity like water aerobics. Another option is to take a walk. More and more parks are making accessible greenway paths and pretty soon you might not even have to bundle up to head outside. But while the wintry months still have you locked indoors, a number of fitness centers have started offering pieces of accessible cardio equipment such as arm bikes or Nusteps which can provide a great place to start.