Look for Sativa, there are hundreds of marijuana strains capable of providing you with an energy boost that helps get you through the day. Unlike coffee and sugar which provide you with short-term energy followed by the jitters, certain weed strains last for hours and help you stay productive and focused. According to Safety and Health Magazine, almost 40% of American workers sleep less than seven hours a night. Did you know that a person who sleeps 4-5 hours a day is roughly as alert as someone with a blood alcohol level of 0.08? One study, in fact, found that 16% of employees fell asleep while driving and 27% slept on the job.