Astronaut Anil Menon shows how weight is measured in space

Indian-origin NASA astronaut Anil Menon demonstrated how astronauts measure their body mass despite being weightless in space. In a video, he showed a device with a calibrated spring that oscillates at different frequencies depending on a person's mass. Menon said he had lost 2 kg since arriving in space and astronauts can initially lose around 10% of body mass.