Wicked Whims is best known for its adult content, but it also includes a surprisingly detailed and realistic menstrual cycle system. With this feature enabled, Sims who menstruate will go through real-life monthly cycles complete with mood swings, cramps, and bleeding. You’ll need to stock up on pads or tampons, and your Sims can experience discomfort, irritability, or low energy during their period. The cycle also affects fertility, so you’ll have to pay attention if you’re trying for a baby (or trying not to). This is one of my go-to Sims 4 health mods because it’s fully customizable in the settings. You can adjust length, symptoms, and even fertility tracking based on your gameplay style. The mod also introduces a Period Tracker app you can use to stay on top of your monthly cycle. This comes in handy when you’re trying to conceive.