Pwede kulang sa tulog. That's why tayong-tayo si manoy sa umaga. I remember before a mp always get good review - because their last call is 9 to 10pm, hindi pa puyat ang mga client, kaya happy silang lahat.
Pwedeng mataas ang blood sugar (diabetes), or lack of regular physical exercise, or stress, or alak, or droga, or energy drink, or biotin (vitamin para sa buhok) intake, or old age.
Short term solution: Robust Extreme or Honeymoon Tea