Kate Beckinsale is an English actress who's perhaps best known for her starring role as Selene in the Underworld film series. She trains with Gunnar Peterson, former Director of Strength and Endurance Training for the Los Angeles Lakers. Here she is making a 150-pound tire look light as a feather, and here she is dominating a heavy sled push.
Heavy sled pushes (ideally 80% or more of your body weight) are a great option for building the muscles of the posterior chain (the hamstrings, glutes, etc.), which is one reason elite trainers love using them to help women get stronger. It's also proven to help you increase your maximal horizontal force production, a key component of running faster.