Answer choices are:
a. gradually increase the difficulty of a workout
b. gradually decrease the difficulty of a workout
c. engage in challenging exercise during workouts
d. vary the exercises in a workout over time
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Correct answer choice is:
A. Gradually increase the difficulty of a workout.
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Step-by-step explanation:
Overload and progression are two fundamental training principles. Overload indicates the measure of load or resistance, contributing a higher pressure, or load, on the body than it is usually accustomed to in sequence to enhance fitness. For example, if a soccer player's aim is to enhance upper body power, he would proceed to develop training weight loads in top body workouts till his purpose was accomplished.