For something that about half the world's population experiences, periods are still surrounded by a surprising amount of mystery and misinformation. Let's clear up some of the most common myths.

Myth 1: You Can't Get Pregnant on Your Period

Fact: While it's less likely, it is absolutely possible to get pregnant while you're on your period. Sperm can live inside the female reproductive tract for up to five days. If you have a shorter cycle and have sex near the end of your period, the sperm could still be present when you ovulate shortly after.

Myth 2: You Shouldn't Swim or Take a Bath on Your Period

Fact: This is an old myth with no scientific basis. It is perfectly hygienic and safe to swim or bathe during your period. Water pressure can temporarily lighten or stop your flow anyway. If you're concerned, you can use a tampon or menstrual cup. In fact, a warm bath can be great for soothing cramps.

Myth 3: Periods Should Last Exactly 7 Days and Come Every 28 Days

Fact: The "28-day cycle" is just an average. A normal, healthy cycle can range from 21 to 35 days, and a period can last anywhere from 3 to 7 days. What's most important is that your cycle is consistent and regular *for you*.

Myth 4: Your Cycle Syncs Up with People You Spend a Lot of Time With

Fact: This is a widely believed phenomenon, but scientific studies have found no evidence to support it. While it might seem like your cycle aligns with a friend, roommate, or family member, it's more likely due to mathematical coincidence and chance. Over time, cycles of different lengths are bound to overlap occasionally.

Myth 5: PMS is "All in Your Head"

Fact: Premenstrual Syndrome is a very real condition with documented physical and emotional symptoms caused by hormonal fluctuations. The drop in estrogen and progesterone before your period can affect neurotransmitters in your brain, leading to real changes in mood and physical discomfort.