enormously depending on serving size, brewing method, bean type, and coffee shop.
A large specialty coffee can sometimes contain as much caffeine as several smaller cups.
Your Genetics Influence How Coffee Feels
Some people metabolize caffeine rapidly, while others process it much more slowly.
This helps explain why one person can drink coffee after dinner and sleep normally while another feels wired after a small afternoon cup.
Body size, medications, pregnancy, liver function, smoking status, and habitual caffeine use can also influence caffeine metabolism.
Moderate coffee consumption may be associated
