Well as with everything it depends: If you just started out (less than two weeks, 4 days/week) then it will make you more awake. If you passed this point then

Well as with everything it depends: If you just started out (less than two weeks, 4 days/week) then it will make you more awake. If you passed this point then there is enough fatigue accumulated that your body just wants to rest/sleep. I would still recommend to finish training 3-4 hours before sleep.