Whether or not exercise will hurt your knees depends on a combination of factors such as age, weight, personal circumstances, exercise style and amount of exercise. Reasonable and moderate exercise generally does not harm the knees, while excessive and inappropriate exercise can cause damage to the knees.
The first consideration is age. Older people often have degenerative changes in their knee joints, and regular exercise at this time may cause accelerated degeneration of the knee joints, thus hurting the knees or even causing osteoarthritis of the knee joints.
Next is weight. Too much weight on the upper body will bring a greater load on the knee, running or deep squatting exercises may bring injury to the knee.
You also need to consider your personal situation, for knee injuries and poor general condition, it is not recommended to do too much exercise to avoid causing damage.
Whether or not exercise will cause damage to the knee also depends on the type of exercise and the amount of exercise. Reasonable and appropriate exercise generally will not harm the knee, while excessive or inappropriate exercise will cause damage to the knee joint.
It is important to consider all of these factors when choosing which type of exercise to do.