Vaginal odor varies naturally with your cycle, diet, and hormones. Learn what's considered normal and which smells may point to an infection worth checking out.
Orgasms involve a complex mix of muscle contractions, brain activity, and hormones. Here's what science says about how they work and their effects on health.
Your daily calorie needs depend on age, activity, and metabolism. Learn how your body burns energy at rest, during exercise, and even while digesting food.
Cialis not working as expected? From timing and food to low testosterone and vascular health, here are the most common reasons it may be less effective.