thighs rather than leaving their arms freely positioned.
Why Do Flight Attendants Do This?
The basic idea is to keep the body in a stable and controlled position during the most critical phases of flight.
Takeoff and landing are considered particularly important phases because the aircraft is closer to the ground and cabin crew must be prepared to respond quickly if something unexpected happens.
A stable posture can help reduce uncontrolled movement of the arms and legs.
It can also help crew members maintain a consistent position during an emergency.