Venus Williams Clif Athlete. Nutrition sustained energy. Venus Williams Clif Athlete. When I was growing up, my mom was into healthy eating, so instead of sweets our family would always reach for something nutritious like an apple. As a professional athlete, I'm even more conscious of what I put into my body today. With my crazy schedule, having a Clif Bar makes it easy for me to get the right mix of protein, fat, and carbs to keep my energy levels high before practice or a game. And with all of the traveling I do, especially long international trips, it's great that I can just bring a few bars along. Plus, they're satisfying enough to stop me from reaching for the bad stuff instead. - Venus Williams 21 Grand slam titles in singles and doubles. FSC: Recycled - Packaging made from recycled material. www.fsc.org. Please recycle. Clif Bar family foundation.