why is my body shaking and i get tired after standing up for a few minutes?

Question

(am i dying) (i am otherwise healthy)

Answer 1

No one an YA is competent enough to give a diagnosis. See a real doctor.

Answer 2

You  may have hypoglycemia(low blood sugar).

You could also have low hemoglobin, a cause from severe Anemia which is where your red bloodstream stream cells are deficient. You need red bloodstream cells so  that your organs can get  oxygen. Anemia is very common and sometimes overlooked, but can be extremely dangerous. My sister was put in the hospital for days when we found out her hemoglobin was at a seriously low level. If she hadn't gone to the hospital, doctors say she most likely would have went into cardiac arrest and died. 

It's probably nothing serious, but it wouldn't hurt to go to the dr.

Have you been -

eating enough

drinking enough water?

sleeping enough?

over exerting yourself?

taking drugs?

if the answer is yes to any of that, then you know why you feel shaky and tired.

Again, go see a doctor just to be sure it's nothing serious.

Answer 3

sounds like low-blood sugar.  

Answer 4

drugs          

Answer 5

"Signs of low blood sugar include hunger, trembling, heart racing, nausea, and sweating."

Have you been dieting?

Answer 6

MS or parkinson disease . 

Answer 7

Go to your real doctor and get some real answers.

Answer 8

if you were dying than you wouldn't be healthy

Answer 9

You don't eat much and have a lack of sugars/low blood sugar level. 

Answer 10

You may have atrial fibrillation. It might be worth getting a EKG test.