Protein is essential for muscle, bone and many vital body functions, but how much do you really need? Protein requirements vary with age, body size, activity, health and individual goals. Learn the recommended intake, when you may need more, and why supplements are not always necessary.

Night-time leg cramps are a common cause of sudden pain during sleep, especially as we age. While dehydration and magnesium are often blamed, they are not the cause in most people. Learn what science says about why these cramps happen, simple ways to reduce them, and when frequent or severe cramps should be medically evaluated.