Old Spice uses a computer model to determine the sweatiest city in the U.S. The rankings are based on the amount of sweat the average person would lose walking around for an hour in the summer. Phoenix topped 2008 list for the fourth year in a row.

1. Phoenix
2. Las Vegas
3. Tallahassee, Fla.
4. Tucson
5. Memphis
6. Miami
7. Houston
8. Tampa, Fla.
9. Baton Rouge, La.
10. Fort Myers, Fla.
11. Huntsville, Ala.
12. New Orleans
13. Birmingham, Ala.
14. Jacksonville, Fla.
15. West Palm Beach, Fla.
16. Montgomery, Ala.
17. Orlando, Fla.
18. Dallas
19. Little Rock, Ark.
20. Corpus Christi, Texas
21. El Paso, Texas
22. Waco, Texas
23. Austin, Texas
24. Columbia, S.C.
25. Mobile, Ala.
26. Jackson, Miss.
27. Nashville, Tenn.
28. San Antonio, Texas
29. Honolulu
30. Fresno, Calif.
31. Savannah, Ga.
32. Shreveport, La.
33. Charleston, S.C.
34. Chattanooga, Tenn.
35. Louisville, Ky.
36. Tulsa, Okla.
37. Raleigh, N.C.
38. St. Louis, Mo.
39. Salt Lake City
40. Kansas City, Mo.
41. Knoxville, Tenn.
42. Oklahoma City
43. Atlanta, Ga.
44. Wichita, Kan.
45. Charlotte, N.C.
46. Greensboro, N.C.
47. Evansville, Ind.
48. Washington, D.C.
49. Richmond, Va.
50. Norfolk, Va.
51. Albuquerque, N.M.
52. Springfield, Mo.
53. Roanoke, Va.
54. Lexington, Ky.
55. Omaha, Neb.
56. Reno, Nev.
57. Indianapolis
58. Baltimore
59. Cincinnati
60. Des Moines, Iowa
61. Charleston, W.V.
62. Philadelphia
63. Springfield, Ill.
64. Harrisburg, Pa.
65. Sacramento, Calif.
66. Cleveland
67. Chicago
68. New York
69. Dayton, Ohio.
70. Asheville, N.C.
71. Los Angeles, Calif.
72. Columbus, Ohio
73. Toledo, Ohio
74. Detroit
75. Grand Rapids, Mich.
76. South Bend, Ind.
77. Providence, R.I.
78. Hartford, Ct.
79. Minneapolis
80. Boston
81. Pittsburgh
82. Denver
83. Madison, Wis.
84. Milwaukee, Wis.
85. Buffalo, N.Y.
86. Rochester, N.Y.
87. Albany, N.Y.
88. Wilkes-Barre, Pa.
89. Colorado Springs, Colo.
90. Flint, Mich.
91. Syracuse, N.Y.
92. San Diego, Calif.
93. Youngstown, Ohio
94. Green Bay, Wis.
95. Burlington, Vt.
96. Spokane, Wash.
97. Portland, Maine
98. Portland, Ore.
99. Seattle, Wash.
100. San Francisco, Calif.