Empowering individuals through the fusion of human expertise and data-driven insights
By combining expert guidance with intelligent data, we help individuals build mental resilience, strengthen performance, and unlock their full potential.
Key benefits of MASS
DATA-DRIVEN FEEDBACK
MASS delivers daily insights into mental and emotional states, helping athletes manage stress, strengthen resilience, and consistently perform at their peak.
PREVENT BURNOUT
By strengthening mental resilience early, MASS reduces the risk of burnout and helps athletes maintain focus, energy, and consistent performance over time.
CONTINUOUS SUPPORT
Athletes receive ongoing mental support through regular feedback and guidance, ensuring they’re equipped to stay strong not just in crisis, but every day.
COACH-FRIENDLY
MASS equips coaches, psychologists, and support teams with actionable mental performance data, enabling smarter decisions to improve well-being and optimize results.
About MASS
MASS is redefining mental training in sport by combining proven methods with smart, data-driven insights. The app offers a proactive approach to mental strength, giving athletes and coaches the tools to understand patterns, prevent burnout, and stay sharp under pressure. Through regular check-ins and continuous feedback, MASS turns personal experience into actionable performance insight, making mental training a natural part of everyday performance.
“MASS’s training setup offers a structured and continuous approach to my mental training, providing valuable feedback that helps me track my development. I see massive potential in MASS and hope many more footballers will adopt it in their pursuit of improvement.”
PERNILLE HARDER
Football player at FC Bayern Munich
Captain of the Danish national team
What Our Clients Say About Us
“MASS helps me sharpen my training and get to the core of how I perform at my best, while assisting me in achieving my full potential and top performances in both training and matches. It is my right hand in daily life, ensuring my focus remains in the right places for optimal development and performance.”
“I see huge potential in MASS and hope that many more football players will embrace MASS in their pursuit of becoming better.”
“MASS aids me as a coach in managing the 3-4-5 aspects the athlete focuses on, fostering a balanced approach. It promotes deeper dialog, forging closer connections with players, enhancing mutual understanding, and ultimately leading to improved results.”
“I really like that my golf coach and I have something factual in MASS to refer to when we train and talk together.
The graphs in MASS provide a really good overview and a clear picture of when I’m training well and when I’m not.”
Unlock your full potential
Train your mind with structure and purpose. Spot the patterns. Push your limits. Reach that final edge.
MASS is your tool for digital mental training support, now and in the future.
Our team
CARSTEN OLDENGAARD
Founder of MASS, brings 20 years as a top-tier mental coach for elite athletes, including Olympic, Champions League, World, and European Championship medalists.
CHRISTIAN HANSEN
Lead business development and digital transformation at Brentford FC, previously consulting for IMG across Premier League, NBA, and NHL
LISE VON SEELEN
MASS investor with a history in companies like Seelen Care, sold to a global diagnostic leader, and involved in AthleticWare, investments, consulting.
MONIQUE CHOUDHURI
MASS advisor with over 20 years of experience working as an advisor and board member in sports for various organizations, including Brentford FC. Currently runs her own consultancy and works as a director for Women in Football.
MARTIN THORSEN
Program Manager with 20+ years in software at Microsoft, delivering complex products on schedule.
FRANS HAMMER
MASS advisor, board member of the Olympic Committee and Team Denmark, works as Vice President of Denmark’s Sport Federation. Former professional handball coach and author of the sports data book “Swim in a Sea of Data.”
