-- Avoid plastics as much as possible. Drinking out of plastic bottles and eating out of tupperware containers has been shown to increase your estrogen. More estrogen equals less muscle and more fat.
-- If you drink protein or meal replacement shakes be sure not to blend them up too thin. Ideally you want them to be thick enough that you have to chew them. Chewing stimulates the production of certain digestive enzymes which are released in your saliva and help you breakdown and process food more efficiently. If one twin drank ten cans of soda per day and then other had an equal amount of sugar from fat free cake, the twin who drank the soda would be fatter at the end of 12 weeks. Chewing your food is that important. Not to mention the fact that your body doesn't burn as many calories during the digestion process when you consume fluids because they are so easily digested. So to at least try to combat this, make your shakes a bit on the thicker side or at the very least "chew" them down.
-- Hold the bottom stretched position on calf raises for at least two seconds on every rep of every set you do. The calves respond greatly to loaded stretching. Anywhere from 2-15 second pauses at the bottom can be used for great results.
-- Be sure to do as many reps for the forearm extensors as you do for the forearm flexors if you want to avoid elbow issues. More exercises (bent over rows, barbell curls) and motions in life (throwing a baseball, swinging a golf club) have you in forearm flexion than in foreamr extension. You need to balance this out to prevent problems.
-- If you do have elbow problems (tennis elbow) try getting a few strong rubber bands or the Expand Your Hand Bands from IronMind and open your fingers up against the resistance. Do this for a couple sets of ten to twenty reps every day for a few weeks and see if it doesn't help. It should.