Walking in space does not result in weight loss

Astronauts in space must exercise to maintain their strength and muscle mass because they experience microgravity. In this environment, they do not weigh as they do on Earth. This means traditional exercises are not as effective for weight loss or muscle building. On Earth, lifting weights involves overcoming the weight of the object. For example, lifting a 5-kg dumbbell requires effort due to gravity. However, in space, the weight of the dumbbell is almost negligible. Therefore, astronauts work much less to move it. To counteract this, astronauts on the International Space Station (ISS) use specialized equipment. One device is the Advanced Resistive Exercise Device. It allows astronauts to push against resistance created by air-filled pistons, simulating up to 270 kg of weight. Astronauts also use a treadmill designed for microgravity. They wear a harness that straps them down, making it feel like they are running on Earth. The tighter the harness, the more resistance they experience. Overall, while astronauts do exercise, the conditions in space make traditional weight loss difficult. They focus more on maintaining their fitness rather than losing weight.