Why is it necessary to increase the total energy value of food with an increase in the share of physical labor?

During physical labor, skeletal muscles are actively working. Any muscle contraction needs energy, which the body receives from food. Energy costs in such cases increase significantly, and in order not to introduce the body into stress and not lead to the destruction of its own tissues, it is necessary to increase food intake.



One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.