If you have recently had an injury, have any disease, are planning to get pregnant or are pregnant, be sure to consult your doctor before starting this marathon. Use programs with caution if you have pain in the spine, intercostal neuralgia, rheumatological diseases, cancerous tumors, diseases of the internal organs, neurological and psychiatric diseases, as well as during pregnancy. It is not recommended to take part in the marathon during exacerbations of any chronic diseases.