Onyxia Coaching
Sustainable fat loss and a stronger body, built around your real life. A plan that fits, a coach who checks in every week, and no all-or-nothing cycle. Two coaches, one standard. Pick your page.
Co-founder ·
coaches women
Birthe Sagstad
Women in their late 20s to 40s who've been burned before: crash diets, group training, programs written for men. Kind, and straight with you.
Coaching for women →Co-founder ·
coaches men
Pedro Serro
Men who want to lose the gut, keep the strength and finally look like they train. Direct, structured, no cookie-cutter PDFs.
Coaching for men →Results
Busy people with jobs, kids and a lot on. Different starting points, same story: already trying, not seeing it, until the plan fit.






A few of the 500+ people we've coached. Shared with their permission.
Reviews
Straight from the clients who did the work.
How it works
Women with Birthe, men with Pedro. The application takes a minute.
As soon as you apply, your coach's calendar opens. Thirty minutes, and you leave with a plan for your training and food, either way.
If working together makes sense after the call, we talk about it. If not, you still know exactly what to change.
Pick your page, apply, and let's find a time to talk.