Overtraining. Your body doesn't build muscle when you train, but rather when you are resting and recuperating. If you never let the body rest, you will over train and make little if any progress as well as feel exhausted and down. Each body part, with very few exceptions, should be worked no more than twice a week. Every body is different, and for many of us once a week per body part is optimal. For example you might work your upper body on Tuesdays and your lower body on Thursdays, or perhaps legs on Monday, chest and back on Wednesday, and shoulders and arms on Friday. Your abs can be worked more often, perhaps 3 times a week or even every other day.
Your calf muscles can handle a lot of punishment and adapt quickly to weight training. For this reason, several basic practices or "keys" must be in place in any calf routine to insure that the calf muscles will be stimulated sufficiently for growth. Here are four keys that you need to remember in your calf training: Use Full Range of Motion - Select your weight to achieve a full contraction at the top and a deep stretch at the bottom of the calf raise repetition.
I often see trainers using a weight that's too heavy, which requires them to shorten the range of motion to lift the weight. If the weight is too heavy, then you'll not achieve full contraction at the top of the lift. A full range of motion will keep the muscles under tension longer and improve your flexibility.