Each surgeon has his or her own guidelines for postoperative care. Light activities generally can resume 3 to 5 days post surgery. More strenuous activity can resume 1 to 6 months post surgery. Consult your surgeon as he or she knows the scope of the surgery and the specifics about you.
All vigorous physical activity should be restricted for 2 weeks following breast implant surgery. After that a common sense approach should be used, if it hurts, stop the activity. It will be about 4-6 weeks before you will be able to resume full activity. This does vary from patient to patient and you should check with your PS for activity restrictions.