That response is normal, especially for those using 5th Gen subliminals, and is proof that the subliminals are working. It happens because your brain is now working so much harder to process all the input, and is most commonly experienced when someone uses subliminals all night as they sleep. To recharge the brain while it's in use takes longer. This is a testament to the power of our subliminals.

Typically people report that they need 1 to 3 more hours of sleep if they are affected this way; not everyone will be. The best way to deal with it is to get to bed earlier so you can get enough sleep.

If it is disruptive, you can switch your usage to daytime, but make sure you get at least as much exposure time in each day.