She won the Olympic gold medal for the women's heptathlon at the 2012 Olympics in London, placing first across a series of events from high jump to a 200m sprint – so when Jessica Ennis-Hill shares her fitness tips, we listen.
We've rounded up some of the best advice she's shared over the years – ideal if you're needing some workout motivation…
On setting goals:
"While it's important to push yourself and set new challenges, you've got to be realistic too. Set your goals too high and you'll feel overwhelmed; you might even give up because you're not allowing yourself any sense of satisfaction or achievement. Set tangible goals that you can work towards, like extending your run each week by an extra quarter km to build up to that 5k. It might take you a bit longer to reach that end goal, but the chances of getting there are much higher."
On sticking to a health plan:
"To try and keep both your diet and the exercise you do varied and interesting. You’re more likely to keep it up if you don’t get bored with it."
On getting abs:
"You don't have to spend hours - an intensive abs workout that takes just two or three minutes a day will show big results. It will hurt though!"
On running:
"Everyone has different techniques and styles when they are running and generally the best technique for an individual is what feels comfortable and natural. If I had to give some general advice I’d say that relaxing is important so as you run so your shoulders and arms move nice and freely. A good training schedule and some good shoes are also really important."
On following a balanced diet:
"For breakfast I'd have a piece of granary toast and some cereal with yoghurt and pumpkin seeds. Then for lunch maybe a salad or some soup with bread. Dinner would be salmon with spices, a sweet potato and some rocket salad."