**What effect does age have on aerobic capacity?**
As individuals age, their aerobic capacity generally declines due to reduced cardiovascular efficiency, lower maximum heart rates, and decreased muscle mass. This decline starts in the early 30s and progresses more noticeably after age 50. Regular aerobic exercise can mitigate this decline, improving endurance and overall fitness levels in older adults. Additionally, appropriate exercise adaptations, such as low-impact activities, help maintain cardiovascular health, enhancing stamina and quality of life with aging.