A poor fluid intake during exercise leads to fatigue because it results in

A poor fluid intake during exercise leads to fatigue because it results in

• A. Less waste removed
• B. Increased risk of overheating
• C. Stronger contractions
• D. Faster recovery

Answer: (A)

Maintaining fluid intake during exercise keeps blood volume up, which helps transport nutrients and remove metabolic wastes from working muscles. When fluid intake is poor, dehydration lowers plasma volume and circulation, making it harder to clear waste products like lactate and hydrogen ions from the muscles. The buildup of these wastes contributes to fatigue and a drop in performance. While overheating is also a risk with dehydration, the direct reason fatigue appears in this context is the reduced removal of wastes. Stronger contractions and faster recovery wouldn’t occur with dehydration; in fact, contractions often weaken and recovery slows.

Maintaining fluid intake during exercise keeps blood volume up, which helps transport nutrients and remove metabolic wastes from working muscles. When fluid intake is poor, dehydration lowers plasma volume and circulation, making it harder to clear waste products like lactate and hydrogen ions from the muscles. The buildup of these wastes contributes to fatigue and a drop in performance. While overheating is also a risk with dehydration, the direct reason fatigue appears in this context is the reduced removal of wastes. Stronger contractions and faster recovery wouldn’t occur with dehydration; in fact, contractions often weaken and recovery slows.