Which muscle would benefit most from overhead extensions?
thigh
triceps
chest
biceps

Triceps would benifit most from these excerises.

The right answer is triceps.

To stretch the triceps, raise one arm over the head and keep it against the ear. Flex your elbow so that your hand goes down behind your head. With the other hand, grasp the elbow of the flexed arm, exhale and slowly pull the elbow behind the head. Do both sides.

Tip to stretch back the triceps: avoid making sudden movements.

The triceps brachii muscle (polyarticular muscle of the posterior part of the arm) is composed of three chiefs: the long portion, the vast medial, and the vast lateral one. This muscle is proximal to the shoulder joint and elbow for distal termination. Brachial triceps is the main extensor muscle of the elbow. The long portion of the triceps brachii also allows retropulsion and adduction of the arm relative to the shoulder. The latter later allows greater stability of the glenohumeral joint during abduction greater than or equal to 90 °.

since you have not provided the options here i   am going to give you general overview about hormone.hormone are actually the part of endocrine system in our body and produced by the endocrine glands. the hormones act like a chemical messenger   within human body. once produce by the glands they   travel through the blood stream and reach at specific or target tissue and organs   which result in control of our body function. the hormones are specific in their work and work on only the targeted tissue or organ   . with the of hormone endocrine system regulate the heart rate , metabolism, our mood and   growth as well as the development and even the sleeping cycle etc. they actually are the messenger for body cell and organs .

answer; philip zimbardo;