Q. Which supplements should I take on a daily basis? — Kim Chambers, via Facebook

A. Supplements vary with the type of training or activity you’re doing. For the average woman who’s trying to gain lean muscle mass and keep her body fat low, the best approach is to stay simple. A good multivitamin plus mineral as directed is a must. Look for one that includes at least 20–40mg of iron, since iron levels decrease with more intense training. Whey isolate protein powders can also help ensure your body is always in a metabolic state and building muscle after a workout. Take it after exercise or mix with oatmeal in the morning. Most of all, supplements are meant to be just that—support for a healthy, balanced diet, not a replacement for it. Consuming a wide variety of lean protein, fruits, and vegetables will help give your body all of the nutrients it needs to be healthy.