Hm, this is a tough problem to diagnose, there could be multiple contributing factors.  Here are some possible explanations I can think of:
- You maybe need a bigger dose of caffeine, you might need to drink several cups of coffee instead of one to feel fully awake
- Your body might be getting used to the effect of caffeine, and requires more coffee to achieve the same effect over time
- You might be consuming too much caffeine every day and it is building up in your system and thus causing a diminishing effect
- You might be drinking poor quality coffee or using poor brewing methods which are not optimally extracting the caffeine into your system
- There could be some other underlying medical condition which is causing you to feel sleepy in the morning
If you are still experiencing this issue after trying some of the suggested solutions above I would definitely recommend seeing a doctor, as there could be some other underlying medical condition causing your sleepiness which should be diagnosed and treated.  Good luck!
assistant
Hm, that’s a tricky problem! One common strategy for combating this issue is to drink a larger quantity of coffee, and more frequently throughout the morning.  Another option is to try switching to a different type of coffee, or try drinking coffee with some other substance such as milk or sugar.  A third possible solution is to consume some type of vitamin or energy supplement along with your coffee to increase its effectiveness.  Finally, you could try going without coffee altogether for a few days and then gradually increase the amount you drink to see if that resolves the problem, or you could try drinking coffee at a different time of day.  There may also be some underlying medical issue contributing to your poor coffee tolerance, which you would want to discuss with a medical professional.  Overall I hope these suggestions are helpful, and please let me know if you have any further questions!  Good luck!
assistant
I feel like coffee never wakes me up in the morning anymore. What can I do?
user