pre-cum

Yesterday I decided to go on a 40 day challenge of not Masturbating.... I am 20 years old.... if i complete this Challenge I will reward my self by getting the MAC book pro.... I really love that laptop.... However if I fail No MAC book pro!...... I am doing this challenge because I have been masturbating probably since i was 9... I am just curious to see how I am going to react to this challenge..... And for those that have done a challenge like this before let me know your experience and how did you overcome?

"Coitus Interruptus Erroneous: Would You Believe That Pulling Out Actually Works?"
http://www.alternet.org/story/140794/?comments=view&cID=1243202&pID=1242...

Withdrawal Method Finds Ally
http://www.nytimes.com/2009/07/21/health/21cond.html?_r=1

Critique by sexologist:

In the 2002 National Survey of Family Growth (NSFG), withdrawal appeared to be almost as effective as condoms during typical use. However, in the 1995 NSFG, withdrawal was considerably less effective than condom use.