Answer:
Ergonomic
Esther has been lifting tools all day, so most likely the repetitive movements or improper lifting caused her pain.
Answer:
Explanation:
While the biceps crosses both the shoulder and elbow joints, its main function is at the elbow where it flexes the forearm and supinates the forearm. Both these movements are used when opening a bottle with a corkscrew: first biceps unscrews the cork (supination), then it pulls the cork out (flexion).
YES, definelty, i know this for a fact because im a swimmer, your back will bend in ways u didnt know, and your abs will form. your welcome :D
