I am a 49 y/o male. After 3.5 days at home, my fever broke at 105.6 degrees fahrenheit saturday morning. My temperature has been normal since; so is my appetite. However, my body strength is still very weak. My energy level has decreased by 90%. I feel winded just walking short distances. I also need to nap an hour or 2 in the afternoon every day. Going to the gym sounds like an impossible feat. Do I need to give my body time to regain it's strength and energy back? Please advise, thank you.