Caffeine doesn't create energy in the way calories do.
Instead, it primarily works by blocking receptors for adenosine, a chemical involved in increasing feelings of sleepiness as you've been awake longer.
Because those receptors are...
STEP BY STEP TUTORIAL
UPDATE: WORKING NA WORKING PA!
Step 1: Open this link: Winston
Referral code: HV5ULX
Step 2: Register ka jan. Mas ok kung mobile number. Fill out mo lahat ng information.
Step 3: Verify your account. Meron diyan papa...