Adrenaline
Two things: adrenaline and 'fight or flight'. Your body produces adrenaline for such moments, which leads to an adrenaline rush, and your body goes through 'fight or flight' sequence, where your mind basically examines the situation and determines whether you should stay and fight or run.
Adrenaline, it's normal
u need more confidence and calmness of mind.
other than that try to follow those tips-http://www.bruceleefightingmethod.com/ch...
cause you scared to go to the next level .
I've been noticing this issue since I were little.
Even if I were about to fight someone that I'm pretty sure i can beat up, i would still shake and this will mess up the rest?
I'm talking about street fights/altercations, not sports fights.
