Chills, muscle aches, fever, fatigue, and other unsavory side effects are all signs that your immune system is mounting a resistance to the virus. Just because your immune system knows what it’s doing doesn’t mean you can’t help. Sleep is an important component to immune system functioning, so make sure you get enough rest after your shot. According to the CDC, fully vaccinated folks can hang out inside with other fully vaccinated people without wearing masks or staying 6 feet apart. Fully vaccinated people can do the same with members of one other household of unvaccinated people, unless any of those people are at an “increased risk for severe illness from COVID-19.”Larger get-togethers are still on the “no” list for everyone, fully vaccinated or not.