Adam Harper drinks a lot of coffee to stay up for study. Recently, Adam felt that (drink) much coffee was making it hardhim to sleep. He also complained of stomachaches. So he decided to stop drinking coffee.
When Adam got up on October 3, he(begin) his day without this morning coffee. By 11
a.m., Adam was in a (terribly) condition. He was tired and had a headache. At 11:30, in the meeting with his student advisor, he found it (possible) to concentrate. What was going on?
Caffeine, a chemical found in coffee, was most likely the reason for how Adam(feel). Caffeine is a stimulant (刺激物) boosts energy levels and improves concentration. The result of lowering caffeine consumption is a "coffee headache" and the (lose) of concentration.
The good news is that these feelings usually pass after four to five days. Doctors suggest(take) some aspirin for the headache. So, if Adam can wait, in less than a week, he may be feeling much (good).
