Every two weeks increase your distance by 2 miles. Focus on strength training 3 times a week and increase intensity at each work-out until you are at a plateau. Continue there building endurance. Keep a record of your heart rate so you don't overdo it.
Answer:
drugs, because there are drugs out there like fentanyl which is deadly or cocaine which is addicting as well.
(There is nothing explaining where the people are but I shall do my best to answer.) If their emotional health is likely to be affected they are in a bad environment. Most likely a verbally abusive family, friendship and or a relationship.
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Some of the most common causes of chemical contamination are cleaning products or pesticides and herbicides from unwashed fruit and vegetables. Examples of chemical contaminants are: industrial chemicals. agricultural chemicals.
