Direction: The sentences below, when properly sequenced, form a coherent paragraph. Enter the sequence as a digit string (e.g. "53412").
1. In this microgravity environment, your blood also tends to move towards the heart and head.
2. Both effects are only short-lived and, after a brief period of readjustment on arriving back home, the heart and spine return to normal.
3. The heart interprets this as an increase in the amount of blood in the body and that it needs to pump less, so it shrinks.
4. In space with less gravitational force than on Earth, there's less pressure on your spine and so it'll get a bit longer, effectively making you as much as two inches taller.