Answer:
Gradually increasing the challenge level of stretches
Step-by-step explanation:
The best thing Ana should do to achieve her goal is to increase the overload principle, which is a principle that states that the intensity of training should be gradually increased. This means that in order to improve, athletes must work harder and harder as their bodies adjust to existing workouts.
Overloading explores the body's mechanisms that bring about the desired changes that go hand in hand with specificity. Increasing endurance requires lifting progressively heavier loads and practicing the sport in question more intensely.
With the progressive increase in training, Ana will be able to increase the range of motion in the shoulder muscles without overloading her.