Traditional lap pools are about 10 feet wide, though widths between 8 and 10 feet are common. (In competition pools, swim lanes are 2.5 meters wide, or about 8.2 feet.) You don't want to go too narrow with a lap pool.
The number of neurons in the brain varies dramatically from species to species. One estimate (published in 1988) puts the human brain at about 100 billion (10 11) neurons and 100 trillion (10 14) synapses.
There is about 160,000,000,000 cells in human brain. Half of the number are neurons, which are rensponsible for all the thinking functions. The other half are glial cells,â¦ which help neurons with their activity.