Muscle recovery after exercise tends to slow down as people age, a phenomenon linked to a combination of physiological changes and lifestyle factors. Experts highlight that while younger individuals may bounce back quickly from workouts, older adults often require a more deliberate approach to recovery and exercise routines.

Asad Siddiqi, chief of rehabilitation medicine at NewYork-Presbyterian Brooklyn Methodist Hospital, explained that aging bodies may experience increased muscle soreness and stiffness following physical activity, which can last longer than the typical 24 to 72 hours. One key reason is that muscle mass begins to decline in the 30s, accompanied by changes in muscle composition, including a loss of fast-twitch fibers responsible for power and force. This reduction leaves fewer fibers to bear the workload, potentially increasing stress and delaying recovery.

Research indicates that chronic inflammation, which tends to rise with age—a process sometimes called inflammaging—may also interfere with the muscles’ ability to regenerate effectively following exercise. Christopher Hurst, an exercise physiologist at Newcastle University, noted that it is difficult to pinpoint exactly how much each factor contributes to prolonged recovery. Furthermore, some researchers suggest that reduced physical activity levels common among older adults contribute significantly to slower muscle recovery and loss of muscle mass, rather than aging alone.

Adjustments to workout routines can help manage these changes. Experts recommend reducing the frequency or intensity of training sessions targeting specific muscle groups or incorporating shorter, more frequent sessions to avoid overtraining. Kelyssa Hall, an exercise physiologist at the Hospital for Special Surgery in New York, emphasized the importance of staying active despite decreasing recovery speed. She advised attention to hydration and protein intake, as aging can blunt thirst sensation and reduce muscles’ efficiency in using dietary protein.

For individuals experiencing pain or prolonged soreness, particularly with pre-existing health conditions or injuries, modifying exercise types or intensity may be necessary. Siddiqi suggested exploring alternative lower-impact activities when traditional routines become uncomfortable, while Hall pointed out that persistent soreness or injury aggravation are signals to reassess workout strategies. Additionally, integrating complementary activities such as strength training alongside endurance exercises like running or cycling may help prevent injuries and support overall fitness.

The American College of Sports Medicine recommends that adults engage in at least 150 minutes of moderate-intensity aerobic exercise and two sessions of muscle-strengthening activities weekly. Hall noted that these guidelines apply to adults over 65 as well, with adjustments based on individual health status. She advised consulting a healthcare provider before initiating new exercise programs and recognizing that perceived exercise intensity may change with age.

Siddiqi underscored the importance of incorporating balance and mobility exercises to reduce fall risk, as well as weight-bearing activities to maintain bone density. Hurst added that adequate rest between workouts is critical to avoid overtraining, given that factors like medication use and sleep quality can influence recovery time. He emphasized that muscle adaptation and repair largely occur during rest periods, underscoring the need to prioritize recovery as part of a healthy fitness regimen for aging individuals.