Former Olympic gold medal-winning swimmer Stephanie Rice, 29, turned vegan five years ago to battle her weight issues. In a recent interview with The Sydney Morning Herald, Rice shared what she eats throughout the day to keep fit.

"After a half-hour workout, I have a litre of water followed by a black coffee with soy milk and a small quarter of watermelon with lemon. I've been vegan for five years. Breakfast today is half a cup of oats with chia seeds, flax seeds and almond milk while working at home," she said.