Right now, check out Smoothie King where they are celebrating National Smoothie Day! On June 21st they will be giving FREE 20-Oz Smoothie! All you have to do is order with their app to earn a freebie. Note that you can redeem your FREE Smoothie from June 22nd through June 27th only. Healthy Rewards members can win FREE Smoothies for Life starting on June 18th. Check it here!