Your biceps, coracobrachialis, anconeus, triceps, and flexor carpi radialis are five major skeletal muscles
Sorry if I'm wrong
All of those factors contribute so the answer is all of the above
The trait of industriousness results in the person being self-disciplined, purposeful and focussed on achievement. They are passionate, do not easily quit and persevere to attain their goals. This leads to higher wellbeing. Compassion goes hand in hand with kindness, agreeableness and empathy.
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Hoped I Have Helped Honey Have A Nice Day "Peace"