Vient ensuite la question de la prévention. Olivier Geffard, directeur de recherche de l'unité RiverLy a pour mission la surveillance chimique des milieux aquatiques, “dans l'objectif de s'assurer du maintien de la santé des écosystèmes aquatiques”. Cette surveillance repose sur la mesure des taux de micropolluants (hydrocarbures, pesticides, etc.) sur certaines zones aquatiques, à l'aide de l'étude de l'intérieur des organismes vivants dans ces zones, qui concentrent les contaminants. “Cette approche du biologique permet une meilleure caractérisation de la contamination chimique de l'eau [par rapport à une analyse du taux de polluants dans un volume d'eau]”, explique Olivier Geffard.
Focusing more on lifestyle issues and their relationships with functional health, data from the Alameda County Study suggested that people can improve their health via exercise, enough sleep, spending time in nature, maintaining a healthy body weight, limiting alcohol use, and avoiding smoking.[22] Health and illness can co-exist, as even people with multiple chronic diseases or terminal illnesses can consider themselves healthy.[23]
L’Inrae (Institut national de recherche pour l'agriculture, l'alimentation et l'environnement) a récemment fait le point sur les recherches en cours issues du mouvement One Health - une seule santé. Dans un contexte délicat, l’approche One Health vise à impliquer l’ensemble des acteurs de la santé humaine, animale et environnementale dans une réflexion commune.
A leader in the eradication and elimination of diseases, the Center fights six preventable diseases — Guinea worm, river blindness, trachoma, schistosomiasis, lymphatic filariasis, and malaria in Hispaniola — by using health education and simple, low-cost methods. The Center also strives to improve maternal and child health in Sudan and Nigeria and improve access to mental health care globally.
The focus of public health interventions is to prevent and manage diseases, injuries and other health conditions through surveillance of cases and the promotion of healthy behavior, communities, and (in aspects relevant to human health) environments. Its aim is to prevent health problems from happening or re-occurring by implementing educational programs, developing policies, administering services and conducting research.[49] In many cases, treating a disease or controlling a pathogen can be vital to preventing it in others, such as during an outbreak. Vaccination programs and distribution of condoms to prevent the spread of communicable diseases are examples of common preventive public health measures, as are educational campaigns to promote vaccination and the use of condoms (including overcoming resistance to such).

Sleep and meditation. Try to avoid high intensity exercising like running and weight-lifting. The more your body is working, the more energy you'll lose. Take the time to relax, stretch (keeps your blood circulation to better remove toxins), and use the time to reflect. Ask yourself why you're doing this, and empower your will to finish. Drink lots of water, nap, and go to bed early. Avoid watching TV because it'll disrupt your consciousness and make you hungry (due to all the food commercials).