Re: Twitching muscles
Muscle twitches have a variety of causes, the majority of which are benign, but can also be due to disease of the motor neurons. Inadequate magnesium intake can cause muscle twitches. Increased intake of foods rich in magnesium, especially almonds & other nuts, and bananas can lift your magnesium levels. Ironically, magnesium supplements may result in diarrhea and more magnesium loss. Muscle twitching also often occurs during a rest period after sustained stress, such as that brought on by unconsciously tense muscles. Reducing stress and anxiety is therefore another useful treatment.
As for as that pain your experiencing in your chest, I don't know what's causing it but I hope it's only growing pains and not kidney or heart pains. I'm sure it's nothing to worry about. If it becomes a concern go see a doctor.