Research scientists and sleep medicine doctors share the counsel they give to the fittest bodies. “No matter how good your nutrition is, no matter how good your exercise routine is, if your sleep isn’t any good, the other two don’t matter—that’s a brave statement, but it’s true,” says James Maas, Ph.D., a sleep and performance expert who works with professional and collegiate athletes.
Physical fitness is a general state of health and well-being and, more specifically, the ability to perform aspects of sports or occupations. Physical fitness is generally achieved through correct nutrition, moderate-vigorous physical activity, exercise and rest. It is a set of attributes or characteristics seen in people and which relate to the ability to perform a given set of physical activities.