Serena Williams is fit, but doesn't like to work at it

Serena Williams' Off-Season Workout Is Dancing—We Love Her Even More

Tennis: Serena Williams shares impressive transformation with fitness routine after baby no. 2

Serena Williams 'SELF' Magazine Cover Interview September 2016

IBM Knows What Makes Serena Williams So Good

Serena Williams Overcomes Body Image Issues, Delivers Empowering Message

Why is Serena Williams so bulky compared to Venus Williams? - Quora

Fitness play-off: how tennis stars compare with other athletes

What Makes Serena Williams a Mental Toughness Icon

The Greatest Serena Williams Quotes - Inside The Mind Of A Champion