A Beginner's Guide to Weightlifting: What You Need to Know Weightlifting can be a great addition to any exercise routine. Not only can it help you build muscle, but it can also improve your bone density and metabolism. However, if you're new to weightlifting, it can seem a bit intimidating. Here's a beginner's guide to weightlifting, including what you need to know before you start, and some tips to help you get the most out of your workouts.