Subject: How long can the body hold a tolerance for caffeine?

I am a 21 year old male, smoker, who was a heavy and long time caffeine user 
for about 10 years or more. I used to consume all kinds of caffeine (Coffee, 
Colas, pills) for years. Friends and I would order cases of Jolt Cola and drink 
them all within a night. I even used to drink a soda before going to sleep and 
still fall asleep rather quickly. Recently I stopped all caffeine intakes for 
two months. I had all the withdrawals for a short time. Then after the second 
month I had a soda at work. I felt no different. Now I consume around 200mg of 
caffeine and function like I used to when I used to consume over 600mg of it. 
Can my body be still be overly tolerant?

Re: How long can the body hold a tolerance for caffeine?