Many modern workers spend most of their day sitting. Combined with office work and long commutes, it is not uncommon for people to remain almost motionless for 8 to 12 hours a day. Joint specialists say this "prolonged sitting lifestyle" should be guarded against more than improper exercise or lack of exercise. Frequent movement throughout the day may matter more for joint health than expensive supplements or intense workouts, they explain.
Paul Lee, a British professor and expert in cartilage and joint preservation, told the British outlet Mirror that the habit of remaining motionless for long periods can negatively affect joints. "The human body was not originally built to stay still for 10 hours a day," Lee said. "Our bodies evolved to suit an environment of steady, low-intensity movement." He added that this should not be viewed as a matter of personal laziness.
Cartilage, which plays a central role in joint health, works differently from muscle. Because cartilage has no directly connected blood vessels, it receives nutrients through fluid within the joint. It absorbs nutrients by being compressed and released like a sponge as the body moves. The more the body moves, the more actively nutrients circulate within the joint. Conversely, staying still all day can slow joint fluid circulation.
Lee stressed that there is no need to suddenly ramp up exercise intensity. The habit of frequently standing up and moving matters more than marathons or high-intensity workouts. "Joints are designed for gentle, regular movement," he said. "Simply standing up frequently from your seat can help supply cartilage cells with fresh nutrients and energy."
He also pointed out that judging joint health solely by how often one exercises is overly simplistic. A few high-intensity workout sessions per week do not automatically guarantee joint health. The key is the lifestyle pattern itself, in which periods without movement grow longer. "The human body responds well to small, consistent movements," Lee said. "It is important to check whether you are moving enough to keep your joints healthy."
The practical method is simple. For those who sit at work for long hours, standing up about once an hour and moving lightly for just 2 to 5 minutes can help reduce strain on joints and muscles. Holding the same posture for too long can stiffen the muscles around the hip, knee and lower back joints and reduce blood circulation. Even low-intensity movements such as marching in place, calf raises, 5 to 10 squats, stretching the back, rolling the shoulders or stretching the neck stimulate the tissues around the joints. Moving the ankles up and down or extending the knees under the desk also helps relieve joint stiffness. What matters is not exercise intensity but the habit of frequently breaking up long periods of sitting.
"Looked So Healthy, Then Suddenly?"...What Is the Hidden Risk Even Seemingly Healthy People Face?
