Claudia and Carlos are preparing for a big dance competition. In order to impress the judges they want to add a new move which requires increased flexibility for each of them. In addition to increasing their daily dance practice from 60 minutes to 90 minutes, they begin taking yoga classes three days per week as well. This additional training displays an increase in the principles of: Overload and Progression Overload and Reversibility Overload and Specificity Progression and Specificity