I believe 7% is almost correct because most people can try to quit smoking a year but hardly ever succeed
<span>Work up to three miles of running for as long as you can at your goal pace. Once you fall off your pace, stop, walk and recover for two minutes and continue running shorter intervals until you reach a total distance of three miles. Long run Saturday: 4-6 miles easy pace.</span>
Lungs- heart- arteries. Capillaries- veins
1. Cocaine
2. Caffeine
3. Morphine
4. Heroine
5. LSD
6. Marijuana
