
Short answer After about a month in weightlessness, height increases by roughly 2.5 cm, and tears cannot flow but ball up instead.
An astronaut watches a drink float inside the space station. Strange things happen to the body up here too.
On Earth, gravity presses on your spine all day. You are a bit taller after a night lying down because that pressure eases for a while.
In space this pressure is gone altogether. After about a month, height goes up by roughly 2.5 cm.
If I went to space I could be a basketball player

An astronaut floating aboard the station. With nothing to hold up, the bones do less work too.
The bones weaken in return. On the Russian Mir station, an average loss of 1 to 2 percent a month was recorded.
Even if you cry, the tears don't run down. They stick together and ball up.
So in space you can cry and your face stays dry
Sources
Photo credits
More useless facts
The BodyBabies Are Born Without KneecapsNewborn babies don't have hard kneecaps
The BodyMorning You Is Taller Than Evening YouYou'll measure tallest if you do it in the morning
FoodThe BBC Once Said Spaghetti Grows on TreesOn April Fools' Day 1957, hundreds of Britons called to ask how to grow a spaghetti tree
AnimalsCrows Remember Your Face and Spread the WordCrows can tell human faces apart, and they seem to pass the word about bad ones