Although you will be up and moving after only a day or two—probably with pain in your breasts—you should avoid lifting heavy objects for the first month after surgery.
You will be given detailed instructions by your plastic surgeon on how to return to your normal activities.
Most patients return to work (if it is not too physically demanding) and social activities within 2-3 weeks.
You will feel weak for several weeks and should limit your exercise to stretching and walking until you have regained your strength.