Otf Transformation Challenge 2025 Challenge. This year, the transformation challenge runs from january 22 to march 17 (though some studios may be following different dates). Calculate your tdee (total daily energy expenditure) and subtract about 500 calories from that, and that’s your daily calorie “budget.” make sure.

Requirements include attending three classes a. With a minimum commitment of just three classes per week for six of the eight weeks, this.