Alpha waves are a type of brain wave that occur when a person is awake but relaxed. They typically have a frequency of 8 to 12 Hz and are most prominent when a person is calm, such as during meditation or daydreaming. These waves are associated with a state of restful alertness and can help improve focus and creativity. In the context of brain activity, alpha waves are often measured using an electroencephalogram (EEG). They play a crucial role in reducing stress and anxiety, promoting a sense of well-being. Engaging in activities like yoga or deep breathing can enhance alpha wave production, contributing to mental clarity and relaxation.