Gravity could feel like a punishing force as Sunita Williams and Butch Wilmore’s bodies readapt to life on earth.

NASA astronauts Sunita Williams and Butch Wilmore have been stranded in space for over eight months abroad the International Space Station (ISS). Upon their return, the two are will experience significant physical changes,

NASA astronaut Butch Wilmore, who is spending extra time in space along with Sunita Williams, said that the two astronauts will even “feel the weight of a pencil” when they reach back on Earth.