How to Do a Back Handspring. The back handspring is a basic building block for many gymnastics or cheerleading routines. To do a back handspring, you have to fall backwards, land upside-down on your hands, and push upwards to land back on your feet.
Generally, they take the form of puzzles which must be solved. The puzzles may be visual, as in the case of pattern recognition games, or they may involve plays on words and numbers. Logic puzzles are also brain teasers.
Different types of normal brain waves. An EEG records patterns of brain activity. Among the basic waveforms are the alpha, beta, theta, and delta rhythms. Alpha waves occur at a frequency of 8 to 12 cycles per second in a regular rhythm. They are present only when you are awake but have your eyes closed.