Overweight people are not suitable for skipping rope. Overweight people will put too much pressure on their knees when jumping, and overweight people have high fat content, which will bring harm to their health. Therefore, heavy people are generally not suitable for skipping rope. Such people suggest choosing moderate aerobic exercise such as swimming and brisk walking for fitness exercise. Those who have not recovered from an old knee injury are not suitable for skipping rope, because the body gives too much buffer pressure to the knee when skipping rope, and the knee injury is not suitable for jumping. Old people and people with osteoporosis are not suitable for skipping rope, and long-term jumping exercise will cause great pressure on the knees. Not only skipping rope, long-distance running and mountain climbing are not suitable for the elderly, osteoporosis, disc herniation or other people with lumbar spondylosis. However, skipping rope can in turn promote bone cell metabolism and avoid osteoporosis, but don't jump for the time being after suffering from osteoporosis.