Venus Williams does sit ups to make sure she looks great on the tennis court in her tight sportswear.
Venus Williams is inspired to stay in shape by her tennis court outfits.
The 29-year-old sportswoman claims her form-fitting clothes force her to keep an eye on her figure, although she does enjoy treating herself on occasions.
She said: "I wear a lot of tight dresses so I'm like, 'I need to do my sit-ups.' I really like candy. Sometimes you lose track of what and how much you've eaten, and then you're like, 'Oh God, what have I done?' "
She has also recently taken to the swimming pool to increase her physical fitness and bike riding - although she is doing better at breast stroke than on the road.
She told People magazine: "I started swimming. I love being in the water - and I was never was a good swimmer - but in the last week, I've learned to swim. I actually had a bike accident that I was really fortunate to come out of.
"I stopped suddenly, because I thought the curb was ending, but then I stopped too soon. Thankfully I had my helmet on."
Venus launched fashion line EleVen in 2007 with US outlet Steve and Barry's, saying she wanted to create something for active women.
She said: "The vision has been to create a collection that will allow women to enjoy an active lifestyle while remaining fashionable at the same time. I'm thrilled with everything we've created to launch EleVen"