The hands typically suffer "micro-tremor" - almost imperceptible shaking under normal circumstances. This is caused by random contraction and relaxation of the muscles as a result of small electrical impulses created by the nervous system. . Some conditions including anger and stress will increase the strength of those nerve impulses and increase the severity of the "tremor". . Aggression often causes the release of adrenaline which can be responsible for increasing the shaking as well - particularly if you have a low blood sugar level at the time. . http://funadvice.com/r/14rbpsvfrj9
Best wishes - Majikthise. .
It is normal for your hands to shake during aggression. If your scared, anxious, nervous it's just a action from that or shock. Practice breathing exercises to prevent it from happening so much.