I noticed that my breasts are sagging after giving birth and breastfeeding for 21 months. Is there anything I can do to firm it up?

Push-ups are really great to firm up your breasts, post partum. Simple and convenient, start off by doing 5 to 10 push-ups daily, gradually increasing your daily routine to between 20 and 30 push-ups. If standard push-ups are too hard, try resting on your knees instead of extending your legs (girl's style push ups haha). Good luck mommy!