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.
Sleep problems tend to be more common when people travel eastward because itâs harder to advance your sleep time than to delay it. But no matter where you fly, you can take a few steps to avoid jet lag. How to Fight Jet Lag. Your best bet is to adapt yourself to the routine of your destination's time zone as soon as possible.