If you want to be sexually active in college, keep condoms on hand, and learn how to make the most of alone time.

Going to college means more sexual freedom, but most students could use some guidance.

RODALE NEWS, EMMAUS, PA—For most students, freshman year at college is the first time they're truly independent—no pestering parents, nagging siblings, or warnings to "be home by dinner!" For many young adults, it's also the first time they're completely in control of their own sex lives, with no parents forbidding coed sleepovers or barging in during opposite-sex visits. By the time the college years roll around, about half of young men and women are having sex. Maybe you're open with your child, and have already had the sex talk. Maybe you have no idea what's going on in that department. But whether you're piling into the car to take your pride and joy to college, or he or she is already there and you're just calling to check in, it's prime time to open up a dialog about safe sex in a college setting.

THE DETAILS: It's a good idea to start the conversation with some supportive words, says Debby Herbenick, PhD, author of Because It Feels Good: A Woman's Guide to Sexual Pleasure and Satisfaction and sexual health educator at The Kinsey Institute. "Parents might want to say that they realize that many young people have sex during this time of their lives, and that they understand that their child may or may not, as well," she says, adding, "Parents can share their own values, but also let their college-age children know that they respect them and love them regardless of their choices, and that they are happy to provide information or help as needed."

She also suggests discussing the consequences of sexual behavior. Sex has obvious benefits; some are obvious (pleasure!), some are not (stronger immune-system health). But there are also risks, including sexually transmitted infections and unwanted pregnancy. Whatever your family's beliefs and preferences, it's important that sexually active young adults realize that striking a balance is key. "There's no doubt about it, having sex involves taking risks," Herbenick says. But that doesn't mean that the only risks are 'bad' ones. "When people take chances, it's often because there are good possible outcomes too, like feeling pleasurable or connected."

WHAT IT MEANS: Here are some ideas to help college students secure safer sex lives on campus:

• Practice with produce. Both guys and gals should know how to properly put on a condom. Herbenick suggests practicing on a cucumber if you're not sure. Also, sexually active students should be sure to have condoms on hand so there's no excuse for unprotected sex.