 [ Symptoms ] will exercise while having a cold or flu get rid of it faster [ Disease ] my oldest son got the flu and ran a fever of 102 7 accompanied with some vomiting my youngest son started running a fever about a day after my oldest stopped showing symptoms my youngest 9 never got a fever past 100 7 but was just as achy with some nausea we treated him for the flu also it lasted no longer than 2 daysfever and the coughing stayed for right at a week they both recovered at about the same rate this could be what is happening fever reducers would help but only slightly and did not last but 30 mins to an hour we got tamiflu from the doctor for my oldest but used over the counter for my youngest and it seemed to work just as good i hope this helps and hope they feel better soon