First, as the most influential Russian head of state in the world, he must show the best mental outlook to the world. There are two purposes. The first is to show the vitality of Russia. The second is that Putin maintains a positive attitude basically every day. Looking at things and countries around you with a healthy attitude will make the Russian president look so young and don't want to be 66 years old.
The second is the pictures of Putin that we have seen in some media, which are basically beautified, which is what we often call PS. Not only the star needs a picture of P, but also the president needs it, which can also bring higher vitality to the people. Moreover, the revised photos are more youthful, and the people who take pictures of Putin are very professional.
Thirdly, Putin himself attaches great importance to fitness and maintenance. When he is fat in middle age, he won't smoke or drink too much. He keeps exercising every day, strictly controls his diet, loves all kinds of sports to enhance his immunity, and takes care of himself irregularly. Now, not only some stars need to protect the national leaders, but they also need to be protected. This is also a very important and key point for Putin to look young.