1. Straighten your fingertips and stretch forward as hard as possible. If your fingers are flexible and your arms are straight, you can not only thin your hands, but also exercise your arms. If your fingers are not flexible, you can bend your arms to avoid hurting your fingers. Take it back and make a strong fist. This group, do 8 to 10 times.

2. Keep your arms straight, with the back of your hand facing you, stretch your forearm, move your left hand backwards as far as possible, and don't bend your arms and fingers for ten seconds. Do what you can, don't force it, let nature take its course. Then, be sure to relax and rebound. Do it again in the opposite direction.

3. Keep your arms straight, palms up, stretch your forearms, grab your fingertips and hold them for ten seconds. Relax and cheer up. Change direction.

4. Each finger bends. Winter is also helpful for blood circulation, especially for pulling the fingertip ligament.

5. Relax. Turn from the little finger to the thumb in turn, make a fist, and then open it from the thumb in turn. Turn from thumb to little finger in turn, make a fist, and then open from little finger to thumb in turn. Doing so can not only relax your fingers, but also cultivate their flexibility and help your brain think.

Persistence is the most important thing to keep your fingers slender forever.