Joint cartilage doesn’t have its own blood supply. Instead, it relies on movement to circulate the fluid that keeps it nourished and healthy, which means staying still for long periods can actually work against your joints.
A little daily movement goes further than most people realize.
This works because of the way blood, i.e. delivers proteins, sugars, vitamins, and minerals to the joints and bone. Blood is squeezed into these hard surfaces with weight bearing activity. We need the pressure of physical activity to “push” the nutrients through the hard dense bone and cartilage.