One of my colleagues broke his hand this summer sliding into first. Do you have a theory that might make him feel better?
The only time you should slide into first base is if the first baseman is getting pulled off the bag by a wide throw so he has to tag you. In that case it might get you under the tag. But otherwise you're faster overrunning it. Now there are people who swear by diving. Their argument is that when you dive and your feet leave the ground you keep the same speed but get your hands out in front of you. Only, there's air friction. Though, I think if diving was in fact better, people would probably do it more.
In January 2004, Major League Baseball announced a new drug policy which originally included random, offseason testing and 10-day suspensions for first-time offenders, 30-days for second-time offenders, 60-days for third-time offenders, and one year for fourth-time offenders, all without pay, in an effort to curtail performance-enhancing drug use (PED) in professional baseball. This policy strengthened baseball's pre-existing ban on controlled substances , including steroids, which has been in effect since 1991.  The policy was to be reviewed in 2008, but under pressure from the . Congress , on November 15, 2005, players and owners agreed to tougher penalties; a 50-game suspension for a first offense, a 100-game suspension for a second, and a lifetime ban for a third.