How to live to be a hundred years old, maintaining your memory, speed of thinking and health? I think the answer lies in combining the accumulated experience of centenarians and the analysis of modern developments and research in the field of cognitive functions, in particular, brain function, as well as the study of the laws of nutrition, physiology, sports adaptology and psychology. Read it, it will be interesting! Everything ingenious is simple! The administration of the liters website is not responsible for the information provided. There may be medical contraindications; consultation with a specialist is required.