And Jessica, who is also co-founder of environmentally friendly baby care business, The Honest Company, also eats an organic diet.
'I feel much better at 33 than I did at 23, even than I did at 30,' she told the magazine.
Later the trio took part in a panel to promote the film which is slated for release on August 22nd.

Lucky guy: Josh Brolin sits in between Jessica Alba and Rosario Dawson as they use Snapchat to talk to fans

Plenty to say: The trio pictured here hours before they are due to take part in a panel at the convention

Need for speed: Josh Brolin posed with a souped up car for the film
Also appearing at he convention on Saturday were Orlando Bloom and Cate Blanchett who star together in The Hobbit: Battle Of Five Armies.
Orlando and Cate sat alongside Benedict Cumberbatch, Evangeline Lily, Peter Jackson and Andy Serkis for the good natured discussion.
'I know how sexy a big, pointy ear can be,' Evangeline teased newly single Orlando.

Famous friends: Orlando Bloom poses with Cate Blanchett as they attend the Legendary Pictures Preview and Panel

Panelists: (L-R) Evangeline Lilly, Orlando Bloom, Cate Blanchett and Andy Serkis
Meanwhile the cast of ABC fairytale drama Once Upon A Time revealed a sneak peak of their new Frozen storyline.
The Hollywood Reporter reported that the clip opened with Frozen characters Anna and Elsa putting flowers on their parent's gravestones.
The storyline will follow on from the Oscar-winning Disney movie plot.
A beaming Jennifer Morrison stole the show in a plunging crimson dress and with her blonde hair in a pretty alpine braid.

Cute: Actress Jennifer Morrison attends ABC's Once Upon A Time panel during Comic-Con International wearing a pretty braid in her hair

Lean on me: Jennifer drapes an arm around her Irish co-star Colin O'Donoghue

Family: Lana Parrilla plays Jared Gilmore's on screen mother in the ABC show

Leading men: Ant-Man stars Paul Rudd and Michael Douglas attended Marvel's Ant-Man panel booth signing at the San Diego Convention Centre on Saturday

Frenzy: Fans flocked to the Ant-Man booth to get their posters signed

Nice guy: The 45-year-old actor beamed as he chatted with a fan

Pleasing the crowds: The 69-year-old actor posed with a fan wearing a mask

Turning the camera on himself: Michael snapped a selfie for a fan

Mob: A mass of Comic-Con attendees whipped out their cameras for photos of the stars

Dapper: Michael sported a khaki pantsuit with a pink button-up shirt

Check it out! Lord Of The Rings director Peter Jackson and screenwriter Philippa Boyens spoke on the Legendary Pictures preview and panel on Saturday

Gift of gab: Zachary Quinto and Hannah Ware spoke on a 20th Century Fox panel for Hitman: Agent 47 on Friday

Let's take a selfie! Channing Tatum leaned in for a photo with moderator Chris Hardwick at the Warner Brothers Pictures panel

The man of the hour: Channing certainly captivated the crowd as he spoke into the microphone

Handsome: The 21 Jump Street star kept it comfortable for his arrival at Comic-Con in a light blue shirt and jeans