body tremors (question)

hey fellows..
I just turned 19, have been lifting for  an year.

recently i started to increase the amount of weights and reps. since then i have been experiencing Tremors in my legs, shoulders and arms. (basicly when i am sitting on a table and relax my legs, i feel vibrations at the hamstrings or some other parts of body..)

just wondering if any one had experienced, and are they just temporary?

when i checked online (if they are symptoms for any disese)
the list is
Parkinson's disease, (too young for this)
multiple sclerosis,
fatigue after exercise, (A PROBABLE CAUSE)
extreme emotional distress,
metabolic abnormalities
alcohol or drug withdrawal blah ....

so is it just fatigue, so i dont have nothing to worry about? or some thing serious.

thanks

age:19 Weight:195 with bf 18% Height: 5'8"
Bench -205 (2 rep)(goal 225 by fall 06)
Squat -225 (10 reps) --> 275(5reps)
Dead Lift -225 (6 reps) --> 250 (10 reps)
leg press -630 (10 reps)

nothing to worry about
i'm 95% sure

I had that in the past,it happened to me like 7-8 times in the past 2 years but not just to 1 muscle

not sure if it's the same thing...
but if u don't feel pain,I think there's nothing to worry about

i'm 19
incline bench press 160lbs 100reps
incline dumbells curl 100lbs 2 reps
stiff leg deadlift 220lbs 100reps

there is no pain, its just that when i realx for a while, i feel those tremors.

i guess its nothin to worry about.

thanks

age:19 Weight:195 with bf 18% Height: 5'8"
Bench -205 (2 rep)(goal 225 by fall 06)
Squat -225 (10 reps) --> 275(5reps)
Dead Lift -225 (6 reps) --> 250 (10 reps)
leg press -630 (10 reps)