I have to agree with wardminter here ... banana is good, as is a fresh walk in the air, aslo cold water on your face or a drink of iced water. I think that with all supplements like Pro Plus, you have to be very careful. I do take Pro Plus myself occasionally. The prescribed pain killers I have to take sometimes are very strong and can make me very tired. I then do take Pro Plus if nothing else will wake me up and I cannot take a nap. But this really is the last resort! A healthy diet helps to keep body and mind alert but sometimes a little extra help is needed, just be careful please.