fill in the blank plz. The progression principle states that as your fitness levels increase, so do the factors of frequency, , time and type. - You risk overuse injury if you al the FITT factors at once. - The 3 stages of progression include an initial stage, an stage, and a maintenance stage. - As time elapses, the improvement rate tends to . - The rate of progression is affected by your initial fitness, your , the rate at which you overload or change your FITT, and your specific goals. - The factor that most influences trainability is . - When improvement levels off you may have reached a plateau. - To prevent detraining when injured, you can vary your routine by . - When exercise leads to negative effects such as chronic fatigue, elevated blood pressure, and insomnia, it may be due to . - It is important to allow ample recovery time, or , following physical activity. A. restoration B. overtraining C. cross-training D. training E. heredity F. slow G. improvement H. intensity I. increase