Here is quick but sharp routine to beef up your chest. remember that you should always train to failure, Focus on form and never use momentum to lift the weights. Stick the routine for at least six weeks so you can track your progress, once you hit your target reps you must increase the weight by a manageable amount. Stronger muscle means bigger muscle!

1. Warm your chest and shoulders up properly before you start.
2. Flat-bench bent arm flies, immediately followed by
3. Incline bent-arm flies, immediately followed by
4. Decline bench press to the neck.

Rest for at least 5 minutes

5. Flat bench-press, immediately followed by
6. Straight-arm pull-overs, immediately followed by
7. Negative dips

Notes:

Flies
Make sure you keep the same bend in your arm through the whole movement. Rather use light weights and do the movement properly, heavy weight will trough your form out.

Decline bench press
If you find that your shoulder joints hurt on the exercise, you can substitute it for dips for chest, these are done by placing your torso in a bent over position, similar to a push up, if you do them correctly, your chest will take a hammering and they are hard to do.

Straight arm Pull-overs
The key here is to use a weight that will allow you to perform the motion correctly, again, to heavy a weight will mess it up for you. Keep the arms straight and focus on contracting your chest muscles to create the movement.

Negative dips
In the same postural position as mention above, use your legs to lift you to the top position, then lower your body down in 6 seconds. When you can no longer control the lowering (you'll know when you collapse) you're done.