Exercising at the International Space Station . Photo : NASA .
Carrying out repairs on the outside of the International Space Station . Photo : NASA .
SPACE VERSUS EARTH
Sunita and her older sister Dina are keen marathon runners and have both been competitive from an early age . They even did a marathon while she was in space : while Dina ran in the streets of Boston , Sunita ran on a treadmill at the space station and due to more favorable conditions she beat her sister on Earth .
62