What do you think would happen to your bones and muscles if you spent a long time in space with no gravity

Without the downward force of gravity, the body works considerably less, causing muscle deterioration and loss of bone density. In a single month in space, astronauts can lose as much bone mass as a postmenopausal woman does in a year

They would become weaker

Explanation:

The absence of gravity means your body does not have to work as hard, but muscles - - and even bones- - will atrophy without disuse.