Supermodel and founder of charity organization Every Mother Counts, Christy Turlington Burns is a known health and fitness advocate. Apple recently partnered with the 46-year-old mother of two, providing her with the Apple Watch as she prepares to compete in one of the world's biggest marathons.

In a new video, Turlington Burns shares her experience with Apple's high tech timepiece - highlighting how it helped her to track her progress and allow for accurate benchmarking thanks to its innovative technology.

Apple is publishing inspiring weekly progress reports from the model on its website. The journal-like features explore Turlington Burns progress, as she prepares for her grueling fitness goal – all in the name of charity.

Christy Turlington Burns Apple Watch

Her most recent entry, for week two, reads: "It feels great to be back in New York. I'd been gone for almost two weeks by the time I returned from Africa, so I put the Modular face on my Apple Watch right away to help me get back into the swing of things. It's been great to see my calendar, the temperature, my Activity rings, and my next appointment in a quick glance. Especially because my week has been packed with work, family, and, of course, training."

You can follow Christy's progress via the official Apple website here.