Sudden bursts of energy, often referred to as spasms, are sudden and intense releases of energy that can be caused by a variety of factors. These bursts of energy can be physical, mental, or emotional in nature and can last for a few seconds or minutes. They can be caused by stress, excitement, fear, or even physical exertion. Spasms can also be caused by medical conditions such as epilepsy or muscle spasms. In any case, these sudden bursts of energy can be both beneficial and detrimental depending on the situation.