What is the primary purpose of performing a plank exercise? (Easy)
#1: Building endurance in the core
#2: Increasing flexibility in the legs
#3: Strengthening the upper arms
#4: Improving cardiovascular health
What is the origin of the term "plank" in fitness terminology? (Advanced)
#1: It refers to a type of wood commonly used in construction
#2: It comes from the act of balancing on a crossbeam in gymnastics
#3: It is named after a specific type of sailing technique
#4: It is derived from the position resembling a wooden plank