Medical school is starting in August. I know there will be late nights of studying, some of which maybe very late. I'm planning on cutting back all caffeine this week, and not drinking any until I began medical school. My hope is that I can return to the days when a cup of coffee had amazing effects on my late study hours! My question is how long would it take to completly destroy my tolerance that I have built up since undergrad? If it functions anything like my tolerance for alcohol, I might be able to reset my caffeine tolerance to zero before orientation! Here's hoping to return to those glorious days when a cup of coffee kept me grinding on a sluggish day.