Getting older can bring more experience and confidence, but it can also bring stiffer and more painful joints.
Many people respond by moving less because they worry that exercise will cause even more wear and tear.
Research suggests the opposite is often true. The right kinds of movement can help nourish joints, strengthen the muscles that protect them, improve balance, and make everyday activities easier.
To understand why, it helps to look inside a joint. The ends of bones are covered by articular cartilage, a smooth and tough tissue that helps bones move against each other with very little friction.
Joints such as the knees, hips, and shoulders also contain synovial fluid. This thick fluid acts as a lubricant and helps deliver nutrients to cartilage.
Cartilage has a major limitation: it has very little ability to repair itself because it does not have its own direct blood supply. Over time, damage and other biological changes can contribute to osteoarthritis, the most common form of arthritis.
Osteoarthritis affects more than 500 million people worldwide. It commonly causes pain and stiffness in joints that carry body weight, including the knees, hips, and spine.
Exercise can help partly because joints need movement. Motion helps circulate synovial fluid around the joint, allowing nutrients to reach cartilage and helping the joint surfaces move smoothly.
Strong muscles provide another form of protection. Muscles surrounding a joint absorb and control some of the forces that would otherwise be placed directly on bones and joint tissues.
This is why strength training can be useful for people with joint pain. Research has found that strengthening the quadriceps, the large muscles at the front of the thighs, can be particularly helpful for people with painful knees.
A major Cochrane review of research on knee osteoarthritis found that exercise can reduce pain and improve physical function. The benefits can be meaningful, although exercise should be viewed as part of overall care rather than as a cure for damaged cartilage.
Movement also trains a lesser-known ability called proprioception. This is the body’s sense of where its arms, legs, and joints are positioned without needing to look at them.
Proprioception tends to become less accurate with age. When this happens, movements may become less well controlled and body weight may be distributed less evenly across the joints.
Exercises that challenge balance can help train this system. Walking over grass or other varied surfaces, for example, requires the ankles, knees, hips, muscles, and nervous system to make constant small adjustments.
A 2026 study reported that training on unstable surfaces improved postural control in older adults. A separate systematic review found that exercise programs that challenged balance reduced falls by roughly 23%.
That matters because falls can have devastating consequences later in life. They are a major cause of serious injury among older adults and can lead to fractures, hospitalization, loss of confidence, and reduced independence.
For people worried about painful joints, low-impact exercise can be a comfortable starting point. These activities reduce some of the force placed on the body while still allowing muscles, joints, heart, and lungs to work.
Swimming and water aerobics are good examples because water supports much of the body’s weight. Cycling can also provide cardiovascular exercise while placing relatively controlled loads through the knees.
Tai chi combines slow movements, balance, and controlled breathing. Studies in people with knee osteoarthritis suggest it can improve pain and physical function, while yoga may help build strength and flexibility when movements are adapted to the person’s abilities.
Walking is another simple option. Beginners can start with short periods on flat, safe surfaces and gradually add slightly varied terrain as their balance and confidence improve.
Balance practice can be simple too. Standing on one leg near a sturdy support can challenge the body’s position-sensing system, but people should begin on firm ground and increase the difficulty only when they can do the easier version safely.
Safety matters because low-impact does not mean risk-free. Deep squats, difficult yoga positions, unstable surfaces, or exercises performed with poor technique can irritate joints or cause falls.
People with significant joint pain, recent injuries, poor balance, or medical conditions may benefit from advice from a physiotherapist, accredited exercise physiologist, or other qualified health professional. A tailored program can match exercise to the person’s strength, mobility, and health.
The evidence discussed in the original article includes a Cochrane review on exercise for knee osteoarthritis, research on tai chi and physical therapy, a 2026 study of unstable-surface training, and a systematic review of balance exercise and falls. The article was published by The Conversation.
Overall, the research strongly supports staying active rather than avoiding movement simply because joints are aging. Exercise cannot reverse every structural change in an arthritic joint, but it can improve the muscles and movement systems that determine how much stress the joint experiences.
The most useful message is that exercise does not have to be intense to matter. Regular walking, water exercise, cycling, balance training, tai chi, and appropriate strength work can help older adults stay mobile while supporting joint function.
The evidence also suggests that a combination of activities may be better than relying on one type alone. Strength protects joints, movement helps maintain function, and balance training reduces the chance that a loss of stability will turn into a serious fall.
Source: The Conversation.
