Try Zest Tea for free. This tea contains more caffeine than coffee. Follow the link and receive your free sample pack containing eight energy tea bags. Improve your energy level with Zest Tea. Scroll down the page, and you will see the button titled "Grab 8 FREE Energy Tea Bags." Tap that button and choose "No, Claim 8 FREE Samples." Fill in the form with your contact details and shipping address and proceed to checkout. Please note that shipping fees would be calculated at the next step.