First of all, let me introduce a method to help you.

You can take exercise by dumbbell to do chest workout. Such as,Chest Press. How to: Lie on your back with your knees bent and feet placed flat on the floor. Hold a dumbbell in each hand and extend your arms upward, palms facing toward your feet. Slowly bend your arms and lower your them to the side, parallel with your shoulders, until your elbows nearly touch the ground. Slowly reverse the movement and return to start. That's one rep. Complete 8 to 10 reps.

Or, you can do push-ups.

If you don't want to be too tired, you can do it with the help of instrument.Just as this push -up trainer fitness equipment. This product is so convenient that you can do push-ups at home instead of going to the gym.