Hard sports play and even random clumsiness can sometimes lead to muscle or joint pain.
Joint pain manifests in a range of different ways.
Our knees are likely the most frequently damaged joint, and they are particularly susceptible when bearing a lot of weight.
When an injured joint suddenly becomes painful again, that could mean that the thin layer of tissue around the joint and tendons may be inflamed. Sometimes an icepack, and rest can help with that.
Occasionally, the skin over a joint can become hot and red, and there may be pain in a repeated type pattern.
There are also conditions which cause pain in multiple joints, including various types of arthritis.
When it comes to your muscles, particularly as you age, these will need more nutritional support, as well as targeted exercise, so that movement does not hurt.