This is not a very common complaint; I would recommend seeing your primary care physician
to have this addressed. There are a few possibilities which should be ruled out and then hopefully treated.
Nervous type tremors in the body when trying to go to bed may be consistent with Restless Leg Syndrome. This syndrome is characterized by the irresistible urge to move to stop odd or uncomfortable feelings. This often improves with movement, worsens with rest and is often worse in the evening. This syndrome can be caused by itself, or caused by other disorders. These disorders, including iron deficiency anemia
, psychiatric disorders, and medication compliance should be ruled out. It is often familial so it is possible your other family members have this. Your doctor
can diagnose this after a further discussion and physical exam. Treatment is available -- please discuss this with your doctor.
There are other possible causes, which include neuropathy (nerve problems) or potentially a psychiatric disorder. I would strongly recommend that you discuss this with your doctor.
You could also be suffering from muscular inflammation -- which may be caused by excess exercise.
I would be concerned for Restless Leg Syndrome. Talk to your doctor. Good luck!