Abodybuilder exercises his biceps by repetitively lifting weight. the biceps get bigger over time. what type of adaptation is occurring?

General Adaptation Syndrome (GAS)

Explanation:

General Adaptation Syndrome - it consists of three main stages that involve the transmission of the body when a person undergoes stress (physiological and psychological).  

Three stages of GAS consist of Alarm, resistance, and exhaustion.

Alarm -  it is the first stage of GAS thus it involves a stimulus that allows the body to respond quickly to the changes.

Resistance - in this stage changes due to initial threats are repaired.

exhaustion - This stage defined the condition of the body when stress is so harmful that the body cannot able to back to its initial position.

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