In a July 29 Instagram post, “The Chemist” revealed how to add more muscle size and thickness with three simple training tips. Frank Zane Breaks Down How to Train for More Size and ThicknessIn the post, Zane outlined three key tips for building more size and muscle thickness, which you can find below. Increase WeightsAdd RepetitionsAdjust SetsIncrease WeightsFirst and foremost, Zane explained that increasing the weight can help lifters achieve more size and thickness. He believes these training techniques are key for building muscle size and thickness. RELATED: Frank Zane Shares Key Tips for Sculpting Arms With One-Arm Dumbbell Triceps Extension