Table 2.

The indicators were collected at different time points in the study.

	Day 1	Day 2	Day 3	Day 4	Day 5	Day 6	Day 7
Individual information	√
Physical measurement	√						√
7-day 24-hour fluid-intake questionnaire	√	√	√	√	√	√	√
Water intake from food			√	√	√
Blood biomarkers				√
24 h urine and related biomarkers			√	√	√
Physical activity	√	√	√	√	√	√	√
Environment	√	√	√	√	√	√	√

√, the measure was taken on that day.