shitty coffee has that effect on anyone! go to a "good" shop and have a real cup of coffee. if they have a barista have them make you a redeye, coffee with one shot of espresso, now that will jack your ass up. i own a coffee shop and this is how i start every day. they should have fresh beans and grind them daily, no additives, that's what gives you the shakes and by all means stay away from decaf, that shit is poison!!!!!!!!!!