"Summa provides us a totally unique way to truly optimize specific preparation and taper before the most important races of the year."

— Arto Sorvoja, Ironman World Championship level Age-Group Triathlete

"Summa is the only tool that has helped me understand how my body reacts to training. I can now understand when I have been pushing too hard, could have pushed harder and how energy intake helps me respond to training better."

— Mathias Höglund, Cross Country Skier