Anaerobic exercise is similar to aerobic exercise but uses a different form of energy — quickly and immediately. Anaerobic exercises include high-intensity interval training (HIIT), weight lifting, ...

Does repeating a positive phrase called an affirmation out loud or to oneself change one's feelings or behavior? Some psychologists believe the answer to this question is yes. Others remain skeptical.

Is it sometimes hard for you to believe in yourself? Do you struggle to think positively? Or does your mind always seem to be able to find the worst-case scenarios? Then daily affirmations may be a ...