Drinking water after sexual intercourse is a simple habit that can support your body’s hydration needs. However, several claims about what happens when you drink water after sex are misleading. Water does not flush sperm out of the body, prevent pregnancy, or automatically protect you from sexually transmitted infections (STIs).
Here are five things to know about drinking water after intimacy.
1. It Helps Replace Lost Fluids
Sexual activity can involve physical exertion and sweating. Drinking water afterward helps replace fluids lost through sweat and supports normal body functions, particularly if you feel thirsty.
2. It May Help You Feel Refreshed
After physical activity, some people feel tired or thirsty. Drinking water can help relieve thirst and contribute to normal hydration, although it does not instantly eliminate tiredness after sex.
3. It Supports Normal Urination
Staying hydrated helps your body produce urine. Some people, particularly those prone to urinary tract infections, may find it helpful to urinate after sex. However, drinking water immediately afterward has not been proven to prevent every urinary tract infection.
4. It Does Not Prevent Pregnancy
One common misconception is that drinking water after sex can prevent pregnancy. This is false. Water cannot wash sperm out of the reproductive tract or act as contraception. If pregnancy is a concern after unprotected sex, seek advice promptly about emergency contraception.
5. It Does Not Protect Against STIs
Drinking water after sex cannot prevent infections such as chlamydia, gonorrhoea, or HIV. Using condoms correctly and consistently reduces the risk of many STIs. If you think you may have been exposed to HIV, seek urgent medical advice because preventive treatment, known as PEP, must be started within 72 hours.
The Bottom Line
Drinking water after sex is generally safe and can help you stay hydrated. There is no special quantity you must drink immediately after intercourse; drink according to your thirst and needs. Water is beneficial, but it is not a substitute for contraception, STI prevention, or medical care when symptoms occur.