Since the back handspring is an advanced tumbling skill, learning it requires a lot of effort. One of the problems that you may encounter is landing on your head. Here are some steps that you can use for guiding your daughter. First, you should ask her to straighten her elbows by pushing from her shoulders.
In the past gamma waves were not researched to the same extent as the other four brain waves. Today they have gained more popularity and are known to be associated with perception and consciousness. Gamma waves can be between 26 and 70 Hz but most often corresponds to frequencies of 40 Hz or higher.
Listening to sounds with the same frequency as the Alpha brain waves (7.5 - 12.5 Hz) has been found to stimulate the emission of those brain waves by the brain. Neuroscientists have made a correlation between an increase of alpha brain waves and the ability to reduce depressive symptoms and increase creative thinking.