 According to Rod Roddewig , a contemporary of Wilt 's , Chamberlain documented his love life using a Day @-@ Timer . Every time Chamberlain went to bed with a different woman , he put a check in his Day @-@ Timer . Over a 10 day period , there were 23 checks in the book , which would be a rate of 2 @.@ 3 women per day . Chamberlain divided that number in half , to be conservative and to correct for degrees of variation . He then multiplied that number by the number of days he had been alive at the time minus 15 years . That was how the 20 @,@ 000 number came into existence . In response to public backlash regarding his promiscuity , Chamberlain later emphasized that " the point of using the number was to show that sex was a great part of my life as basketball was a great part of my life . That 's the reason why I was single . " 
