Without gravity to push against, astronaut's heart will weaken and no longer circulate blood as it did on Earth. This could result in Dizziness, High blood pressure or serious Headaches. 2. read more
Without gravity to push against, astronaut's heart will weaken and no longer circulate blood as it did on Earth. This could result in Dizziness, High blood pressure or serious Headaches. With little opportunity to Exercise, muscles will weaken and making any small movement will be awkward and painful. read more