Well, maybe they are not quite secrets, but they are definitely little known facts (or assumed facts).

• 1.7% of all U.S. parents who are taking care of children are stay-at-home-dads (143,000 dads). That number has doubled since 1995. -U.S. Census
• Since 1970, the number of single fathers has grown from 400,000 to 2.3 million. -U.S. Census
• 18% of single parents living with their children are men. -U.S. Census
• 40% of guys would consider staying at home with their kids. -2003 Careerbuilder.com Survey but another study shows 56% of men would consider staying at home with their kids. -2004 Spike TV Poll
• 42% of men attend religious service once a week. -2004 Spike TV Poll
• 44% of fathers say they don’t spend as much time as they would like with their kids. -2004 Spike TV Poll
• 48% of men have trouble sleeping. -2004 Spike TV Poll
• 48% of men are uncomfortable discussing personal problems. -2004 Spike TV Poll
• 56% of men have been to a strip club. -2004 Spike TV Poll 
• 57% of men support equal partnership in marriage. -2004 Spike TV Poll
• 68% are concerned about making ends meet. -2004 Spike TV Poll
• 70% of men are watching their weight. -2004 Spike TV Poll
• 72% of men would sacrifice pay and job opportunities for more time with their families. -2004 Spike TV Poll
• 79% of men have looked at a pornographic magazine. -2004 Spike TV Poll
• 79% of men have a personal relationship with God. -2004 Spike TV Poll  
• 83% of men say religion is important in their lives. -2004 Spike TV Poll

The better you understand someone, the more likely it is that your church can effectively reach them. While these numbers with the exception of the U.S. Census may not be exact, they do provide some interesting insight into understanding the lifestyles, needs, and problems facing the American male. 

Special thanks to AlterNet for highlighting the facts and sources.