When she’s not in the recording studio, touring the globe, or churning out hits, Ellie Goulding can be found stepping up her fitness game rather than relaxing at home on her couch. Ellie’s the embodiment of strength — physical and emotional. The Grammy-nominated singer works extremely hard on her music, yet still somehow manages to work out equally as hard — which made her the perfect candidate for Core Hydration to tap for the brand’s new True To Your Core campaign, designed to inspire people to pursue their deepest passions while maintaining a healthy, balanced lifestyle. Here, Ellie opens up to Teen Vogue about her love of boxing, what songs can be found on her workout playlist, and how to cope with stress and come out on top.

Teen Vogue: What are you most excited about regarding your partnership with Core Hydration?

Ellie Goulding: I train hard so I have to drink a lot of water. It’s so funny — my friend is a huge water geek. She’s one of those people who are really particular about the taste of water, and when I was on tour, she suggested I try Core. Honestly, it tasted like the best water I’ve ever had. It uses a special filtration process and it’s packed with electrolytes and minerals. I’ve been drinking it ever since.

TV: You’re a fitness inspiration to tons of people. Are you still a big fan of boxing?

EG: I miss boxing. I haven’t been able to do it in awhile because I’ve been on tour. That’s the thing about being away. When I’m in one place, I feel like it keeps me focused. With working out, you have to be incredibly disciplined. I like boxing because it’s not about throwing punches. It’s a full body workout. It’s about smart footwork, agility, flexibility and being in touch with your body.

TV: How do you psyche yourself up for a workout if you’re just not in the mood and are set on skipping?

EG: I admit this morning I really wanted to stay in bed. It’s quite a comfy bed! But I usually get myself up just knowing that I’ll feel worse if I don’t do a workout. You have to take it one step at a time. I think about what I’m doing at the moment, not what I have to do. That way, you’re not punishing yourself; you’re not setting yourself up for failure in your head. You have to get yourself in the mindset of being in the present, not thinking ahead or thinking behind. It’s like going for a walk, and turning it into a run.