Here's How Astronauts Exercise On Board The ISS
Exercise for ground - bound masses is a choice , but for astronauts up there in the International Space Station ( ISS ) , it is anything but . Without usage in an environment with extremely low solemnity , theirbone density and brawn masswill rapidly lessen , so NASA mandate that their cosmonaut spend at least two 60 minutes per daytime working out . According to theHuffington Post , there are multiple ways in which they can do this in what is effectively a space gym ....