They gave them 8oz of tart cherry juice twice per day for 14 days, which was followed by another 14 days with no juice and then 14 more days of placebo beverage. (fitnessandpower.com)
Researchers report that people whodrank watermelon juice before exercising felt less sore the next day than those who drank a pink placebo beverage (J. Agric. (nutritionfacts.org)
The control drink was a noncaloric placebo beverage. (academic.oup.com)