updated 12/05/2012 AT 1:00 PM ET
•originally published 12/05/2012 AT 2:15 PM ET
Celebrity trainer and PEOPLE.com blogger Harley Pasternak gives his top 5 tips for remaining healthy and toned while pregnant.
From songstress Adele and actresses Megan Fox, Reese Witherspoon, Anna Paquin, Sarah Michelle Gellar and Drew Barrymore, to models including Adriana Lima, mommy-hood has hit Hollywood in a very big way.
My job is to keep many of these women fit and healthy during their pregnancy so they can feel better during the nine months, have a smoother delivery and – of course – get their pre-baby bodies back as quickly and safely as possible.