In an interview to Men’s Journal, Dominic Thiem was asked what it takes to beat Roger Federer, Rafael Nadal and Novak Djokovic. The Austrian player said: "It takes everything. It takes, of course, good tennis. You have to keep up with them tennis-wise, but also fitness-wise.
They’re the three best players of all time, but they’re also three of probably the fittest players of all time." Thiem also commented on the best advice he has ever received: "Always keep going. Keep momentum, no matter what’s happening.
Always keep working hard and you’ll reach your goals. A good friend of mine gave me that advice many years ago." On how he manages to stay fit, Thiem concluded: "I try to do something every day. When there are no tournaments, I do a pretty tough program—even twice a day.
When I’m in the tournament, I reduce it a little bit, but still, I try to do something every day. My routine is very intense, but it’s normal exercises that many people probably do, too: a lot of strength work, speed work, and a little bit of endurance with lots of core work.
I like crunches and Supermans. I really love to do core exercises because they don’t only make you fit, they also make you look good."