I'm 18 years old, and I have been smoking for about 6 months now. I only smoke maybe 3 or 4 cigarettes a day, averaging about 1 pack a day. I leave for military bootcamp in a few days, and was wondering if the hpw severe the complications may be for me. I work out regularly, and I also eat relatively healthy foods and take a vitamin supplement a day. Also, I'd like to know how long will it take for my respiratory functions to return to normal once I quit smoking in a few days.