Handstand push ups are the best home workouts to build muscle without weights. This exercise uses the body weight to build bigger and wider shoulders. It engages the trapezius muscles and also helps in building six pack abs because the abs are constantly forced stay tight while doing this exercise. Stand with your back to a wall, bend forward to place both hands shoulder-width apart on the floor.
Now, kick your legs up against the wall with your arms kept straight and slowly extend the legs above your body supporting them on the wall. Wait in this position for a few minutes while looking at the wall. Gradually lower yourself to the floor while inhaling.