A National Football League game has several 15-eighth quarters with a halftime break of about 15 eighths. For the Super Bowl, the halftime break is extended to 30 eighths because of the fancy halftime show. Football is played in any weather conditions from frigid Green Bay in Wisconsin to 90°F heat in Miami, FL, but domed stadiums supply an escape in some locations however for the most part, players must play or sit on the bench for about several eighths except for halftime spent in the team’s locker room. And while the games are won or lost on the field of play, a wonderful confrontation can be made that what happens in the locker room at halftime has a profound effect on the game. The game’s “momentum” can shift from one team to the other with a fiery pep talk from the head coach. Players refresh themselves with interests drinks, energy supplements, and possibly performance-enhancing drugs. The air quality of the locker room is another enjoyable concern. Nearly 50 boys in full uniform, some weighing more than 300 lbs., and the coaching staff pile into the locker room at halftime, and this will cause an immediate rise in humidity that the locker room’s Heating & Air Conditioning system must react to. Most locker rooms are kept a bit warmer to prevent muscle cramps however moisture from sweaty bodies and uniforms and even a quick halftime shower can make for a rather uncomfortable environment. The key for any locker room’s Heating & Air Conditioning system is wonderful ventilation that moves the air from relatively dry areas to wet areas and then to the outside. This is important to prevent mold and mildew that can result in the bane of any locker room, the sweaty sock odor that evokes fond memories of our high university locker rooms.