Statistical analysis
CONSORT guidelines were followed to report the results from this clinical trial. Average and standard deviation for each data set was calculated using Microsoft Excel (Microsoft Corporation, Redmond, WA, USA). Post-consumption changes from baseline to later assessments were evaluated by between-treatment analysis for each time point. This allowed evaluation of changes on the day a person consumed the active product, in context of the person’s circadian changes on the day he/she consumed placebo. The evaluation used within-subject analysis and the two-tailed paired t-test where statistical significance was set at P<0.05, and a high level of significance P<0.01.