Будьте здоровы!

Hardening is one of the most ancient and at the same time simplest ways to strengthen and maintain health. However, not everyone knows how not to harm themselves or their child and properly strengthen the body. So, first you need to know reliably how the body reacts to temperature changes and what happens to it in the cold. It is equally important to understand the basic rules of hardening and skillfully use natural factors when carrying out this procedure. You can harden in the air, in water, in winter in an ice hole - and each method has its own characteristics and important details, neglect of which can turn against you. To prevent this from happening, before you start hardening, study this book - it is a small but detailed instruction - with explanatory tables and diagrams - on how to stay strong and healthy at any age.