The obvious first answer is follow your Board Certified plastic surgeon's advice. Each plastic surgeon has his or her opinion as to when any given patient, having any given surgery, can return to a full exercise regime.That being said, in my practice, 4-6 weeks usually is the turning point when wounds are considered healed sufficiently on any breast lift, allowing re-entry into the world of exercise. Your question goes to the heart of wound healing and cosmetic surgery. Wounds are completely healed at 6 months, 90% healed at 3 months, and 75% healed at 6 weeks. Most plastic surgeons, myself included, believe that 75% wound healing is about the right time to begin aggressive exercising, i.e. you can start doing situps at 6 weeks after a tummy tuck. Obviously, you won't necessarily have the same strength as you had prior to the 6 weeks layoff from working out. I tell my patients to start slowly and let their body tell them when they can or can't go on to the next level.