The human body’s construction ... A pilot’s first indication of G-force effects is being pushed down forcefully into their ...

G-Force (noun): a measurement of an object’s acceleration; it is the net effect of the acceleration ... as they create incredible stress on the human body, and make the pilot exhausted.

"It's really building a great foundation for 'what do we know about the effects of long duration spaceflight on the human body?' And 'what do we need to be looking for and concerned about as we go ...