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.

Astronauts Sunita Williams and Butch Wilmore, who are currently stranded in space, are due to return to Earth on March 19. However, the two astronauts may have difficulty adjusting to Earth's gravity upon their return.

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