But infectious bacteria can make you ill. They reproduce quickly in your body. Many give off chemicals called toxins, which can damage tissue and make you sick. Examples of bacteria that cause infections include Streptococcus, Staphylococcus, and E. coli.
Getty Images/Fuse. Head down: Jet lag symptoms include feeling sleepy during the day in your new time zone. Jet lag is what we call it when your body is reacting to these changes in your environment, which is basically your body taking time to adjust to its new place and time. Symptoms include feeling sleepy during the day in your new time zone, but also having a troubled sleep at night.
The more time zones crossed, the more likely you are to experience jet lag. Jet lag can cause daytime fatigue, an unwell feeling, difficulty staying alert and gastrointestinal problems. Jet lag is temporary, but it can significantly reduce your vacation or business travel comfort. Fortunately, there are steps you can take to help prevent or minimize jet lag.