Eight Coffees Ranked by How Much Caffeine They're Packing

Eight Coffees Ranked by How Much Caffeine They're Packing

Most people don't realize this, but McDonald's coffee is fairly weak compare to other places you can go. Starbucks coffee has more than TWICE as much caffeine per ounce. Even 7-Eleven coffee has significantly more. Here are eight coffees ranked by how much caffeine each one is packing...
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