Technique of exercises. This is a very important parameter that I must explain to you. Ie for a full workout that is chest muscles, it is vital to follow the correct technique. You can do push-UPS on the boards (but not focus on chest and triceps), respectively, of the hand rising and chest not. It's a SHAME! The same goes for dumbbell bench presses. Push-UPS from the bars Is a heavy basic exercise that will contribute to the growth of your pectoral muscles. Subject to proper execution technique and load progression. You will need to constantly increase the load (increase weight or repetition) for example has done with its own weight 12 times, add weight hang themselves +1 kg made 8 times, next workout again with the same +1 kilograms do 10 or 11 (how to get) once you reach 12 reps, INCREASE WEIGHT (BUT NOT MUCH at 1.25 or 2.25 kg NOT MORE than). In a month it will be already 10 kg, in 2-15. This is the progression of the load. Okay, something I had gone on the technique analyze. In o