There can be so many reasons ,
** sometimes after an intense work out the nervous system which causes your muscles to contract becomes fatigued causing your muscles to shake.
** Sometimes shaking is due to low levels of glucose in the muscles or
electrolytes which are necessary for muscle contraction
** It could be due to being dehydrated.
** Arms legs hand and feet shake because of muscular weakness and atrophy also.
** This could be fatigue
** This could be some kind of stress stored in muscles.
** This could be
vitamin deficiency.
Next Steps
To rule out exact cause for shaking of legs and hands you have to talk in full details about
any other symptoms ,
about your routine ,
are you working out extensively ,
are you dieting hard
Health Tips
* have a balanced diet
* hydrate properly
* exercise within limits , don't overdo .
* if it persists consult to know exact remedy to cure your problem.