TRUE OR FALSE: Write TRUE if the statement is correct and FALSE if it is incorrect. 1. Principles of training are somewhat important when becoming more serious in exercise and sports participation. 2. Barriers in exercising and becoming more active are personal and vary individually. 3. Exercise for a healthy lifestyle should be done at most three times a week. 4. Overtraining should be dealt with seriously. 5. The effects of the principle of reversibility are almost the same with the effects of variation​