Pushups are one of the best body weight exercises for strengthening your upper-body and core muscles. Many professional athletes and fitness gurus, such as Herschel Walker and Jack Lalalanne, have sworn by doing hundreds and even thousands of pushups routinely to stay in shape.

The biceps curl is a fundamental exercise targeting the biceps muscles, the muscles on the front of your upper arm. No other muscles are directly involved in a biceps curl, although several muscles assist during the movement.

Hand tremors can occur for a variety of reasons. Parkinson's disease, hypoglycemia, multiple sclerosis, hyperthyroidism, fatigue and stress can all lead to hand tremors. Hand tremors often occur while your hand is at rest or if your hand is held in a certain position for an extended period of time.

Just doing resistance training for the back of your arms won't get rid of the fat. Spot reduction -- where you get rid of fat in just one part of your body -- is a myth, according to the American Council on Exercise.

The biceps brachii muscle is the muscle flexed most often to demonstrate one’s strength and dedication to the weight room. In order to get the biceps to grow, it is important to stimulate the muscle using a variety of different exercises and training techniques such as including supersets in your biceps workouts.

Use a pull-up bar to target your biceps. This involves changing your grip and fatiguing the biceps so they're challenged to grow.

Most back exercises require you to pull the weight you're lifting towards your body. Doing so incorporates your biceps. This makes it very common for weightlifters to exercise their back and biceps on the same day. If you want to begin a back and biceps workout, plan to perform this workout once per week.

Strong upper arm muscles make daily tasks easier with the added benefit of toned deltoids, biceps and triceps from all the training. Your progress in strength training can be achieved and measured with weights at the gym, but you can also do exercises at home to quickly strengthen your arms.

Large arm muscles can be the result of heavy participation in exercise or sports -- including basketball, baseball and swimming.

Exercise-related arm shakiness can happen to anyone, no matter your gender, age or fitness level. It can be caused by a variety of exercise errors and conditions, some that require the attention of a doctor. Because shakiness can be severe, it is important to understand why it can occur and how it can be prevented.

If you struggle with inner arm fat, a few changes to your workout routine will help you lose the fat. Although it’s not possible to spot reduce a single area, you can combine intense cardio activity with arm-strengthening moves to lose fat all over the body, including the inner sides of the arms.

Doing pushups may give you not-so-pleasant flashbacks of high school physical education class or military boot camp, but they are an excellent exercise for developing the pectoral muscles while engaging the core and arms. Pushups alone are not enough to get pecs.