1, foot health damage: the insole is hard, which will cause extra pressure and discomfort to the foot, and long-term use will lead to foot pain, foot deformity and balance problems.

2. Gait change: increasing the insole will interfere with the normal gait, making walking unnatural, and then affecting the coordination and stability of the body.

3. Lumbar muscle strain: Because increasing the insole changes the way the foot contacts the ground, wearing it for a long time will cause uneven stress on the waist, which will increase the burden on the knee joint and waist muscles and lead to lumbar muscle strain.

4. Foot deformation: Long-term wearing of heightening insoles, especially those improperly designed products, leads to changes in the structure of the foot, such as foot deviation or negative focus forward, which will cause pain when walking, and even swelling and local tenderness.

5, joint ligament damage: increasing the insole will make the knee joint bear extra pressure, especially during exercise, this extra pressure will lead to knee ligament damage.

6, blood circulation is blocked: increasing the thickness of the insole will limit the blood circulation of the foot, leading to numbness or other discomfort in the foot.

7, skin problems and infections: increasing the poor material of insoles and poor air permeability will lead to excessive sweating on the feet, increase the risk of skin eczema, dermatitis and other problems, and also increase the chance of fungal infection.