7 signs your body could be sensitive to coffee

You Feel "Jittery" Or Have Muscle Spasms

The jitters might also play out in the form of muscles spasms. "It can cause twitching through increased muscle activity," Gaffney says. "This can be felt as well as observed as tremors and often accompanies anxiety associated with caffeine intake." Think eye spasms, shaky hands, and the inability to stop tapping your foot.