In your journey towards becoming stronger, fitter, and healthier, there often comes a point where you wonder if taking some supplements will help your progress along. But what fitness supplements are actually effective and worth investing in?

Here to answer that question is Layne Norton, a powerlifter and doctor of nutritional science who has a passion for debunking health-related myths and promoting evidence-based recommendations. He’s also, full disclosure, the owner of a supplement company himself. But I don’t have any financial connection to Layne’s company and we keep this conversation neutral and high-level. In our conversation, Layne argues that there are three top-tier research-backed supplements to consider — whey protein, creatine, and caffeine — and we unpack how to use each of them for optimal results. We discuss whether plant proteins are sufficient for building muscle, whether it’s true that creatine causes bloating, acne, and hair loss, how to best time your caffeine intake to energize your workouts, and much more. At the end of our conversation, Layne shares some additional supplements that seem promising for enhancing your health and fitness.