Lady dates, upcoming nuptials, and a baby on the way are just a few reasons people make exercise a priority; these celebs are no different. Check out all the stars that made time to sweat this week — including a famous pair of actresses!

Vanessa Hudgens

Vanessa took to the Hollywood Hills for a hiking date with a group of friends.

Lea Michele

Lea was spotted hiking with her parents through the Santa Monica Mountains Conservancy.

Demi Moore

Both Demi and her Pilates mat keep bundled up with a little shearling.

Ashlee Simpson

Based on the sweat factor, it looks like Ashlee got a great workout in this week!

Reese Witherspoon and Naomi Watts

Reese and Naomi were all smiles after leaving a yoga class together. They celebrated their workout [1] with a few more friends at a nearby juice and smoothie bar.

Olivia Wilde

With only three months left in her pregnancy, Olivia's fitness routine is going strong. Looking cool in a cropped motorcycle jacket [2], she was recently seen heading to yoga.