Health benefits of physical activity include all of the following except:

A. Increase in walking speed is a common benefit of regular physical activity, especially in older adults, as it enhances mobility and endurance. B. Prevention of weight gain is supported by physical activity through improved metabolism and energy balance. C. Increased risk of hypertension is not a health benefit; in fact, regular physical activity helps lower blood pressure and reduces the risk of developing hypertension. D. Improved bone and functional health results from weight-bearing and resistance exercises, which enhance muscle strength, coordination, and bone density.