Answer :
Final answer:
Specificity, progression, and overload are key training principles for improving fitness.
Explanation:
Specificity in training principles means that fitness improvements are specific to the type of training performed, such as how walking benefits the lower body and cardiovascular system, while push-ups benefit upper body muscles. Progression principle involves gradually increasing stress to improve fitness without risking injury. Overload principle dictates adding workload to the current exercise regimen to enhance fitness.
Learn more about training principles here:
https://brainly.com/question/30237421
