Beta waves are a type of brainwave that occur when a person is awake and alert. They typically have a frequency range of 12 to 30 Hz and are associated with active thinking, problem-solving, and concentration. When you are engaged in tasks that require focus, such as studying or working, your brain produces more beta waves. These waves are important for cognitive functions and can influence your mood and energy levels. However, excessive beta wave activity may lead to feelings of anxiety or stress. Balancing beta waves with other brainwave types, like alpha waves or theta waves, can promote overall mental well-being.