How to Build Bigger Arms💪 Tag a friend who wants bigger arms! - Follow @P.T.Pete for daily fitness/nutrition tips and education📚 - You’ll never have big arms as long as you’re under-weight. No matter how many biceps curls you do. To build bigger arms, increase your overall muscle mass first by getting stronger and eating more! Eat More. You need to eat more calories than you burn in order to gain weight. Most guys will need at least 2500 - 3000kcal/day, skinny guys with fast metabolisms will need even more. Start eating at least four meals a day – breakfast, lunch, dinner, post workout. Eat your stomach full on each meal. Get Stronger. Strength is size. Staple goals for men is to Increase your Squat to 140kg/300lb, increase your Bench Press to 100kg/220lb, and increase your Deadlift to 180kg/400lb. This will increase your overall muscle mass. Rest. Muscles grow when at rest. Give your arms a break, they’re small muscles. Check StrongLifts 5×5: the routine allows for plenty of re...