There are many ways to get weed out of your system, there are cleansing pills that get it out of your system water also helps, but pretty much its all luck.
30 days.
for exactly 28 days because it stays in your blood cells and the blood cerculates throughout your body
1 month
6 months
3 Months
If you smoked it in the manner you described, it can show up in urine anywhere between 60-90 days after you last smoked.
couple of days
a week
I would say about a week, tops.
3 days max
it stays in your system for 2 to 3 months, depending how much you smoked.
Depends on how long time you have smoked and the amount of cigarettes smoked everyday. On average, after getting a medical doctor approval, you can start exercising a few weeks afterwards. Aerobic exercises is recommended for ex smokers.