The Science Behind Exercise Fatigue: How Your Brain Protects You

The video explains that the pain experienced during exercise is not due to muscle fatigue but rather a self-preservation mechanism in the brain. Researchers from South Africa have identified a chemical called interleukin 6, which signals the brain to stop exertion to prevent muscle damage. This mechanism helps protect the body by encouraging rest before harm occurs.

What is the primary reason exercise machines feel painful according to scientists?

• The muscles are overworked.

• The brain is signaling to stop.

• The machines are poorly designed.

• The body lacks endurance.

Who discovered the brain's self-preservation mechanism during exercise?

• Experts from Europe

• Scientists from South Africa

• Researchers from the USA

• Doctors from Asia

What is the role of interleukin 6 in the brain?

• To improve brain function

• To increase endurance

• To signal when the body is too tired

• To enhance muscle growth

What does interleukin 6 prevent by signaling fatigue?

• Muscle damage

• Weight gain

• Dehydration

• Increased heart rate

How does the brain protect the body during exercise?

• By reducing heart rate

• By enhancing muscle strength

• By increasing oxygen supply

• By signaling the need to stop