Fortunately, science has put its foot down where decaf tea is concerned. For the best drink that won't keep you awake until 5 a.m. on a workday, according to Michelle Francl, Ph.D., in her book ...

0.001%, of residual methylene chloride) after processing decaffeinated tea and coffee is bad for a person’s health,” says Glover. “If you’re worried, you can always choose decaffeinated ...