500
Only ___ minutes without a cigarette, your heart rate and blood pressure drops.
After ___ hours, the carbon monoxide level in your bloodstream returns to a normal level.
After ___ to ___ weeks without tobacco, lung function improves and you have better cardiovascular circulation
Only 20 minutes without a cigarette, your heart rate and blood pressure drops.
After 12 hours, the carbon monoxide level in your bloodstream returns to a normal level.
After 2 to 3 weeks without tobacco, lung function improves and you have better cardiovascular circulation