Genetics play a key role in how your body metabolizes caffeine
A woman drinks coffee as she uses her laptop (Shutterstock.com)

Genetic variants play a key role in how individuals metabolize coffee. Some can drink coffee before bed and go right to sleep, while others a wired after just a single cup. Studying how genes impact coffee consumption habits is nothing new. A 2014 study identified genetic variants that are associated with coffee consumption behavior. Two variants…