General exercise is generally avoided when WBC count falls below which value?

• A. 7,000
• B. 10,000
• C. 1,000
• D. 5,000

Answer: (D)

White blood cell count reflects immune system strength. When the immune system is not robust, as indicated by lower WBC levels, the body’s ability to fight infection during the stress of exercise is reduced, increasing risk for infection and other complications. Therefore, in clinical practice, general exercise is avoided when WBC count falls below about 5,000 cells per microliter. Above this level, most individuals can safely participate in regular activity with standard precautions; much lower counts, like around 1,000, indicate more significant immunosuppression and require stricter activity modification. Normal ranges are typically higher than 5,000, so 5,000 serves as a practical cut-off to limit exertion during leukopenia.