Is it a reasonable gamble for karen to skip the influenza vaccine this year

If she isn't feeling good at the present time when she is at the Drs and he asks to give it.

Because without physical activity, the body has extra "energy" if you will, and so when it is time for bed you are not tired, so you end up staying up all night. also there is probably an effect on your internal clock, which messes with your melatonin production which goes hand in hand with your sleep cycle