As busy as a new mother is, it is still advisable for her to make an effort to get some moderate exercise and work towards a gradual increase in stamina, muscle tone, and overall fitness. The idea is that you look forward to the physical activity and enjoy the feeling when it is complete so moderation is the key, otherwise it will feel like a chore and you will give up. How quickly you experience weight loss. weight loss after pregnancy at this stage will depend on many things including how much you gained during the previous nine months. It is generally understood that after giving birth most women’s bodies make considerable adjustments.