Human beings have never stopped exploring space, and astronauts have never stopped exercising in space. Exercising in space is important for astronauts' health and well-being, as it allows them to stay fit and remain in good physical condition. This is especially important for astronauts who will be spending long durations in space, as it helps them to maintain their bone density and muscle strength, as well as their physical mobility. Furthermore, it can help them to recover more quickly after they return to Earth.