What are common signs of fatigue or overexertion that riders should monitor?

• A. Increased energy and alertness.
• B. Unchanged performance and no fatigue.
• C. Slowed reaction time, poor judgment, dizziness, cramping, or excessive sweating; rest and hydration recommended.
• D. Faster reaction time after long shifts.

Answer: (C)

Fatigue and overexertion impair thinking and physical control, which is especially dangerous on a bike. Watch for signs that your body and brain are signaling you to slow down: slowed reaction time, poorer judgment, dizziness, muscle cramping, and excessive sweating. These are indications of dehydration or heat strain, and they mean your coordination and decision-making aren’t at their best. When you notice these, the safe move is to stop riding, rest, rehydrate (ideally with electrolytes), and cool down. If symptoms persist or get worse, seek medical advice before continuing. These signs contrast with options like increased energy or unchanged performance, which would not reflect fatigue, and with a faster reaction time after long shifts, which would be unusual and risky.