During fatigue

Give example of muscle showing no fatigueness.

During flight, birds do not fatigue easily.

Assertion: A parson undergoes fatigue very soon during exercise. Reason : Muscle fibres undergo oxygen debt during exercise.

Assertion: A person undergoes fatigue very soon during exercies. Reason : Muscle fibres undergo oxygen debt during exercies.

Assertion : During exercise, a person undergoes fatigue very soon. Reason : During this period , muscle fibres undergo oxygen debt.

Assertion: A person undergoes fatigue very soon during exercies. Reason : Muscle fibres undergo oxygen debt during exercies.

Muscle immune to fatigue are

What is muscular fatigue?