Lazy in office?

why is it that i feel lazy n sluggish after half an hour coming to office.half slept half awaken..attending meetings is a tedious task then..tried a lot but cant help it....what should i do?Lazy in office?
What I describe as 'Cascade Effect'.
It happens when we are too tired at work and cant get enough rest at home for whatever reasons. Add to that lesser sleep. This builds up and up to cause a cascade like effect.
Suggest you take a couple of days off and sleep as much as you can. Also suggest you take a good multi-vitamin + multi-mineral supplement like Centrum.
Drink some coffee. If the coffee offered at work does not wake you up, make your own to your taste.
Besides trying to get enough rest to allow you to give your job a good days work. One thing that might motivate you is...Think about how much your job means to you. You need your job for your livelihood. So, you need to perk yourself up so you can get a little excited about going to work. Get excited about doing the best that you can. Remember, somebody can see your sluggishness maybe before you can. Things like that will come up during evaluation time. They are so good about finding some negative reason to not give a good increase in pay or etc.
If you really like your job and want to keep it; make what you do better, give them reason to notice a difference in your attitude and work performance.