I already successfully managed to counter quite a bit of short-comings in my muscular balance this way. I really recommend this to everyone being serious about working out with proper form. Specially someone like me who might suffer from muscle imbalance due to an illness.
Strength and muscle gains (or fat losses!) abound during rest periods - outside the gym. The problem with the role of recovery in exercise and understanding it is that it has not received much attention and nor has there been many articles in magazines or chapters in fitness books written on the subject to constitute any understanding on the full recuperative cycle.