Whether or not you are able to lose weight or back to your pre-pregnancy weight fast depends on your gene. Thanks to the 'never grow fat' gene I inherited from my dad! I need not control my diet or do exercise in order to lose weight, even after my four pregnancy! Juz back to pre-pregnancy weight within a month.
I managed to shed all the extra fats and flabby tummy after childbirth thru a 3 months slimming program. I am now back to my pre-pregnancy weight and body size. This program is really very good in shaping in addition to lose weights and fats. No starving and exercise is required =)
I dun think age plays a part. I gave birth at 37 years old. Pre pregnancy weight was 56kg. Max weight was abt 60kg. Straight aft gave birth I was 55kg. I believe it's genes cos my mum went bck to her pre pregnancy weight very quickly aft giving birth to my sis n me.