Final answer:
It is recommended that a muscle group should be rested for 24 to 48 hours between resistance training sessions to ensure muscle recovery and to prevent injuries.
Step-by-step explanation:
Rest and recovery are essential components of resistance training to prevent muscle overuse, injury, and to allow for proper muscle healing and growth post-exercise. Generally, it's recommended that a muscle group should be rested for 24 to 48 hours between resistance training sessions. This rest period ensures muscle recovery, allowing for the repair of microtears and the alleviation of delayed onset muscle soreness (DOMS).
Additionally, during this rest period, resting can include performing activities that target different muscle groups or engaging in low-impact exercises like swimming or yoga, which can aid in active recovery. Proper rest is key to achieving progress without causing damage or excessive soreness, and it is tailored to an individual's fitness level, the intensity of workouts, and their body's unique response to exercise.