Yet Biel says it wasn’t until she began trying to conceive almost two years ago, that she realised she knew nothing about her body and how contraception works.
The 33-year-old said, “[I thought] Now what happens? I’ve been on the pill for so long; how hard will it be to get pregnant?”
Biel explained that she was also misinformed about so much basic information surrounding conception.
"Suddenly I realised I really didn't know what's going on inside my own body," she says. "It was shocking."
It wasn't until Biel met activist Saundra Pelletier, who is the founder of not-for-profit health care organisation WomanCare Global, that she realised just how ignorant she was. They began talking and now the pair are launching a series of online videos that will cover everything from puberty to contraception.