Answer:
Bursitis is the inflammation of the bursae. Cycling, long-distance running, and tennis tend to overuse particular joints, which results in the inflammation of the bursae.
Step-by-step explanation:
Between the tendons and muscles of our body that are in direct contact with bones, there is a sac filled with synovial fluid. This sac is called bursae, and it reduces the friction between the tendon/muscle and the bone in a joint, giving a lubricated surface that makes the movements smoother and painless. When we use a joint excessively, the bursae inflames, which causes bursitis, a condition where the bursae lose its function, and the movements are painful.
In sports like cycling, tennis, and long-distance running, there is excessive use of some joints that can cause bursitis. In the case of cycling and long-distance running, bursitis is on the knee joints. In tennis, the bursitis is on the wrist.