More importantly restore your core and pelvic floor after baby. http://mumsfitnessacademy.com.au/ shares 4 simple exercises to restore the abdominal muscles and pelvic floor after giving birth. Mums Fitness Academy specialises in pre and postnatal exercise. Rushcutters Bay, Eastern Suburbs NSW. For more information, please contact us. Mums Fitness Academy, 102/72F MacDonald St, Erskineville, Sydney, NSW2043, Phone: 0413 007 051.