Are you looking for a massive chest like Arnold Schwarzenegger? Not hitting the chest muscle properly will leave you with underdeveloped pec muscles.
Here are some tips to build bigger chest muscles:
Focus on lifting heavy with volume
Lifts such as bench press and incline press allow you to lift more weight than other isolation exercises in the gym. Do not be afraid to stack a bunch of weight on the bar when doing bench press or other chest exercises. You need to stress the muscles as much as possible in order for them to repair and increase size. Ideally you should be shooting for 6-10 reps on bench press, while doing about 4 sets. You should be pushing yourself to almost failure on each set and it should not be easy. Do not go to low of reps or you will be working more on strength and not size.
Vary your chest exercises
Do not be one of the persons that is always doing flat bench every week to look cool. You need to be hitting incline, decline, and flys. Also, make sure you switch from barbells to dumbbells from time to time. Change the order or your chest exercises for a given day as well.
Incorporate Weighted Dips
Many people ignore this really effective chest exercise. It actually works your chest really well along with your triceps. Be sure to add weight to dips for added effectiveness. I never thought dips worked well until I started adding weight. Start with 25 pounds and keep working your way up. You will need a dip belt once you start doing more than about 50 pounds with a dumbbell. Weighted dips are definitely one of the best chest exercises.
Focus on proper form
Make sure your form is correct on all of your exercises. Not only cold you cause yourself injury, but you could be limiting your progress. Leave your ego behind and focus on technique rather than how much weight you can stack up.
Soon you will start seeing added size to your pectoral muscles by following these simple tips.