In anticipation of the first day of summer on Thursday, June 21 — and the hot weather that comes with the season — Old Spice announced its Sixth Annual Top-100 Sweatiest Cities List. For the fourth time in six years, Phoenix burned up the charts to take the No. 1 spot in this annual ranking of the nation’s heaviest sweaters. To earn the top spot, Phoenix’s average high temperature was 94.6 degrees in June, July and August 2006, resulting in the average Phoenix resident producing 26.3 ounces of sweat per hour. That means on a typical summer day, residents of Phoenix collectively produced enough sweat to fill more than 53,000 beer kegs in just one hour. In recognition of its top ranking on the list, Old Spice — the No.1 selling antiperspirant/deodorant stick and body wash brand with guys of all ages — will deliver a year’s supply of Old Spice Red Zone antiperspirant to Phoenix Mayor Phil Gordon. Phoenix also took this top honor in 2006, 2005 and 2003, living up to its nickname “Valley of the Sun.” Other Study Highlights — Texas continues to dominate the list, producing half of the Top 10 cities: Dallas (No. 3), San Antonio (No. 5), Waco (No. 6), Austin (No. 8) and Corpus Christi (No. 10). — Last summer’s record temperatures helped Oklahoma City crack the Top 10 for the first time, coming in at No. 9 – a significant jump from No. 31 in 2006. — Year to year variations in temperatures caused other big moves, surprising some typically cooler cities: Salt Lake City (up 21 spots to No. 46), Los Angeles (up 38 spots to No. 54), Denver (up 18 spots to No. 69) and San Diego (up 22 spots to No. 72). Los Angeles and San Diego previously ranked in the Bottom 10, last year coming in at 92 and 94 respectively. — San Francisco is the nation’s least sweaty city included on the list, coming in at No. 100. With an average high temperature just a cool 64.2 degrees during the summer months, each San Franciscan produced 17.8 ounces of sweat per hour — almost 10 ounces less than Phoenix’s average output. Most Uncomfortable Cities People in dry climates are usually unaware of the amount of sweat they produce since most of it evaporates quickly. However, when high humidity enters the picture, they tend to notice sweat more — whether experiencing that sticky, “muggy” feeling or suffering from soaked shirts and sweaty brows. With this in mind, Old Spice is also recognizing the nation’s most Uncomfortable Cities. “As temperatures rise, people become overheated and start to sweat,” said Dr. Paul Ruscher, associate professor and associate chair of meteorology at Florida State University. “While everyone sweats, people in places like New Orleans and Miami feel it more because high humidity levels cause sweat to stick to their skin.” W