Rest days are designated periods when individuals take a break from their regular physical activities or workouts. These days are essential for allowing the body to recover, repair, and rebuild muscle tissues that may have been stressed during exercise. Incorporating rest days into a fitness routine can help prevent injuries and improve overall performance. During rest days, individuals can engage in light activities, such as walking or stretching, to promote blood flow without overexerting themselves. Proper nutrition and hydration are also important on these days to support recovery. Overall, rest days play a crucial role in maintaining a balanced and effective fitness regimen.