Aploon/iStock/Getty Images. Childrenâs picnic tables are made to a smaller scale than regular A-frame tables. They usually feature four lengths of timber for the table top and two lengths for the seats. Typical dimensions for a childâs picnic table are 33 inches long by 38 inches wide and 22 inches high. A newer design is the octagonal or round table with attached seating for up to eight. Table tops usually feature 10-12 lengths of timber or other building material while the benches commonly have three lengths.
Excess of physical exertion may precipitate facial and eye muscle spasm. It can be due to muscle fatigue. Side effects of certain medicines can produce facial twitching. Drinking excess of coffee, or any other caffeinated drinks can cause involuntary twitching of muscles, facial muscles are one of them.
The common, less serious causes of muscle twitching include: 1  exercise. 2  stress and anxiety. 3  caffeine and other stimulants. 4  nutritional deficiencies. 5  smoking. 6  irritation of the eyelids or surface of your eye. 7  reaction to drugs, such as corticosteroids, stimulants, and estrogen.hen a nerve is stimulated or damaged, it may cause your muscle fibers to twitch. Many twitches experienced in your body are common and may go unnoticed. However, other types of twitching may be a sign of a nervous system condition and should be checked out by your doctor.