Question

why do people who participate in marathons tend to have smaller muscles?
a. lifting weights provides no benefits for them.
b. muscle endurance is more important for them than muscle strength.
c. continuous running burns glucose and fat.
d. they participate in a sport more suited to their body type.
please select the best answer from the choices provided

Explanation:

• Option A: Lifting weights can have benefits like improving bone density and metabolism, so this is incorrect.
• Option B: Marathon runners focus on long - distance running. Muscle endurance (the ability of muscles to work for long periods) is crucial. Building large muscles (associated with strength) would add extra weight that is not beneficial for long - distance running. So, muscle endurance is more important than muscle strength for them.
• Option C: While continuous running burns glucose and fat, this does not directly explain why they have smaller muscles.
• Option D: It is the sport (marathon running) that influences their body (smaller muscles due to the need for endurance), not the other way around.

Answer:

B. Muscle endurance is more important for them than muscle strength.