What does strength training primarily aim to enhance?

Strength training primarily aims to enhance lean muscle mass and strength. This form of exercise involves the use of resistance to induce muscle contractions, which leads to improvements in muscle size and strength over time. By engaging in strength training, individuals can increase the density of their muscle fibers, which contributes directly to overall strength.

Additionally, strength training fosters improvements in metabolic rate, allowing the body to burn more calories at rest due to an increase in muscle mass. While the other options relate to physical fitness in some way, they are not the primary goals of strength training. Flexibility and range of motion are more closely associated with stretching and mobility routines, cardiovascular health and endurance are targets of aerobic exercise, and body composition and nutrition encompass broader aspects of fitness and health than what is specifically addressed through strength training exercises.