Absolutely normal. Your body is chock-full of powerful hormones that will make you a bit crazy for about the next sixty five years. They should settle down in a couple dozen.
I recommend exercise. Lots of varied exercise including cardio, agility and moderate weightlifting.
It is fun.
It will help distract you a bit. Not much, but it will help.
It will help with your studies.
It will give you self confidence which will give you many advantages throughout life including the time you’re “on the market” for shidduch.
And it will be like money in the bank when you are older. Muscle tone, flexibility and good health are easier to maintain than to acquire once you hit thirty. If you get in the habit now it will be much easier then.