It describes history of attempts to rejuvenate old people. Now a lot of data has been accumulated on the distant impact of some biological objects on others. The key importance is the concentration of exposure. For this purpose, Biotron or Bio-camera devices have been invented. In the experiment, mice lived 25% longer and remained young and active in old age, unlike decrepit and sedentary control animals. Various EKOM Biotrons are described, as well as their impact on human health.