How fast till muscle memory kicks in?

[PiFoGoRYT]

If I trained in the past, and not so long ago (oneyear ago), how fast can I get baack into good shape with musclememory? One month, or two? If I was able to be very lean before, andmore bulky a year ago, so what and when can I expect? What is yourexperience with coming back, and how did muscle memory help you?

 

[SteveMobsterG]

Last year I had a back injury which meant no weights for 3 months. I lost over 10lbs. I gained it back in 2 weeks once I restarted training.