Answer:
Abdominal muscles.
The abdominal muscles
Explanation: The abdominal muscles are located between the ribs and the pelvis on the front of the body. The abdominal muscles support the trunk, allow movement and hold organs in place by regulating internal abdominal pressure.
You have to have more mental focus because you cant rely on anyone else and you don't have any other teammates to rely on.
Wellness scale
Explanation:
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