When trying to increase the muscles in your legs, a good way to do this is to try some lunges. Put barbells in each hand of any weight, and take a knee then extend your other leg out and take a knee with the other leg. This builds leg muscles.
Doing sit ups or crunches can be a good way to develop ones abdominal fitness. Sit ups can be done with out any special equipment just a soft spot to exercise on. Also there are different kinds of sit ups one can do to work different parts of their core. Sit ups can boost ones fitness.
If you change your grip methods when working on bench-pressing, lighten up! Decrease the weight you are using so that you do not inadvertently injure your shoulder muscles. Your muscles need time to prepare for extra weight, so work your way back up to the max every time you make a change.
To increase your balance, try standing one-legged on a sofa cushion while passing a medicine ball from one hand to the next. This is harder than it sounds and will increase your coordination, balance and overall body control. For an advanced technique, try closing your eyes during the exercise.
Use the same weight. To create strong muscle memory, use the same weight throughout every step of your workout. Muscle memory is important because it enhances your muscles ability to work harder. Once you have established a new weight, you can always increase that limit the next time you visit the gym.