Answer:
to counter the effects of zero gravity on their muscles and bones
Explanation:
Zero G's weaken the body, and muscular deterioration happens faster
B: To counteract the effects of zero gravity on their muscles and bones.
In space, muscles deteriorate faster because zero gravity means they don't have to work as hard (Ex you leg muscles don't have to work as hard to walk around)
I hope I could help!! <3
B
"everyday activities"
