Avoid Styrofoam
Color of mug matters (red for sweetness)
Filtered water
Boiling water
Steep 5 minutes
Theophylline bears structural and pharmacological similarity to theobromine and caffeine, and is readily found in nature, being present in tea (Camellia sinensis) and cocoa (Theobroma cacao). A small amount of theophylline is one of the products of caffeine metabolic processing in the liver.
Caffeinated coffee bad for heart but for tea it's goodl
Coffee mixed regarding artery function, but tea is generally good, black or green.