There are thousands of extra large exercise balls of sleek designs that bring better exercising effects obtainable from different prices to different brands. This guide focuses on how to buy the best exercise balls that are easy to hold or carry.
Ball lightning comes in most colors of the rainbow and ranges in size—from a typical toy marble, to those extra large exercise balls some people sit on instead of office chairs. It can form inside closed spaces and move down chimneys and horizontally . In addition to producing light, ball lightning can give off sparks and is associated with hissing or buzzing noises and a strong, irritating odor. It typically lasts for only seconds, glowing with the intensity of a bright household light bulb. The unpredictable and variable nature of ball lightning has made it difficult to develop a conclusive theory explaining how it works, but accounts of its strangeness are numerous and have been published for centuries.