The Ultimate Exercise Library for Busy Professionals Simple, effective movements to burn fat, build strength and stay consistent Download Your Free 7-Day Beginner Strength Plan Today!!! FREE 7-Day Beginner Strength Plan Skip to Videos Strength Training For Beginners | Abs | Chest | Back | Biceps | Triceps | Legs | Shoulders | Legs, Leg Extensions Leg Extensions are a great exercise for beginners as they provide support as well as developing leg strength and definition in the quads (front of the thighs).