The last time we went to Jamba Juice was definitely a decade ago, and there was almost certainly a wheatgrass shot and an Orange-A-Peel smoothie involved. (Does anyone else remember being infuriated when it was taken off the menu?) But, this week we have a really good reason to go back, and it involves a FREE drink. Jamba Juice is turning the big 25 this month. And, to celebrate, it's giving us a present! The smoothie chain will offer customers a gratis smoothie (or green juice) between 9 a.m. and 11 a.m. on Thursday, April 23. Guests can choose between a Caribbean Passion or Strawberries Wild smoothie, or opt for a Tropical Greens juice. And, the best part? There's no catch! Just walk in and ask for the beverage of your choosing, no coupon or purchase required. We might even order a wheatgrass shot just for old times' sake.